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PCF - The PCF8574 and PCF8574A provide an interface to most microcontroller families via the I²C bus for general purpose remote I/O expansion. With these devices, the SCL line is unidirectional, from the microprocessor to the device. The PCF8574 and PCF8574A are functionally the same, but differ in their I²C addresses. By using the PCF8574 or PCF8574A or both, circuit designers can greatly simplify complex glue-logic interface circuit, increase I/O pin-count, reduce PCB area used, and improve system reliability.
View all PCF products.

PCA - The PCA9306 is a dual bidirectional I2C and SMBus voltage-level translator operational from 1.2 V to 3.3 V VREF1 and 1.8 V to 5.5 V VREF2. This device allows bidirectional voltage translations between 1.2 V and 5 V, without the use of a direction pin. The low ON-state resistance (ron) of the switch allows connections to be made with minimal propagation delay. When the enable (EN) is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports.

The PCA9557 is an 8-bit I/O expander for the two-line bidirectional bus (I2C) designed for 2.3-V to 5.5-V VCC operation. This device provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface (serial clock and serial data). The PCA9557 consists of one 8-bit configuration (input or output selection), input port, output port, and polarity inversion (active-high) registers. At power on, the I/Os are configured as inputs. However, the system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register. All registers can be read by the system master.
View all PCA products.

TCA - Designed to control LED’s via its I²C two line bus, the TCA6507 series of LED dimmers is ideal for processor based applications. Without this device, the microprocessor or microcontroller must be actively involved in turning on and off the LEDs (per the required dimming rate), which uses valuable processor time and the overloads I2C bus. The TCA6507 is optimized for a 1.65V to 3.6V voltage supply but the LED’s can be driven by any voltage up to 5.5V.

The TCA6408 is designed to provide general-purpose I/O expansion for most microcontrollers via the I²C interface. With an operating voltage range of 1.65V to 5.5V the expander is perfect for microprocessors and microcontrollers with low supply levels. Bi-direction voltage-level translation is also possible because of its wide operating voltage range.
View all TCA products.

• View general I²C products
  
• I²C Serial Bus Devices App Clip (PDF)
  
• I²C Bus Selection Guide (PDF)

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Voltage Level Translation

The simultaneous use of different supply-voltage levels on the same circuit board has led to the need for voltage-level translation. To have switching compatibility between a driver and receiver, the output thresholds of the driver must be compatible with the receiver input thresholds. Texas Instruments offers a full spectrum of products to achieve voltage-level translation. This includes a wide variety of devices: dual-supply level translators, FET switches, overvoltage tolerant devices, devices with TTL-compatible inputs and open-drain output functions. We offer the industry's broadest level-translation portfolio to meet all your level-translation needs.

TXB0104 - The TXB0104 series of parts are 4-Channel Bidirectional Voltage-Level Translators with Auto Direction Sensing. Utilizing two separate power supplies, the TXB0104 can provide universal low voltage bi-directional translation between any 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes.
View all TXB0104 series products.

TXS0102 - The TXS0102 series of parts are 2-Channel bidirectional voltage-level translators with auto direction sensing. Utilizing two separate power supplies, the TXS0102 can provide universal low voltage bi-directional translation between any 1.8V, 2.5V, 3.3V, and 5V voltage nodes.
View all TXS0102 series products.

SN74AVCA406L - The SN74AVCA406L is a transceiver translator designed for interfacing microprocessors with MultiMediaCards (MMCs), secure digital (SD) cards, and Memory Stick™ compliant products. This series of translators enables system designers to easily interface low-voltage microprocessors to different memory cards operating at higher voltages.
View all SN74AVCA406L series products.

• View translators/level shifters/voltage converter products
  
• View Translation Overview Brochure (PDF)
  
• View Translation Selection Tool

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RS-232: IEC ESD
Texas Instruments (TI) offers new RS-232 devices with system level IEC61000-4-2 electrostatic discharge (ESD) protection. This protection makes the RS-232 interface immune to damage from ESD strikes that may occur while the system is up and running, such as when a connection to the RS-232 cable is made. These devices are drop-in replacements and are functionally identical to the existing industry-standard solutions, providing a seamless transition in the qualification process. These devices meet the requirements for low-power, high-speed applications such as portable/consumer, telecom and computing equipment.

TRS3243E - The TRS3243E RS232 line driver/receiver meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. This combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, or compatible.
View all TRS3243E products.

TRS3386E - The TRS3386E is a three-driver and two-receiver RS-232 interface device, with split supply pins for mixed-signal operations. This series has a unique VL pin that allows operation in mixed-logic voltage systems. The TRS3386E is also capable of running at data rates up to 250 kbps, while maintaining RS-232-compliant output levels.
View all TRS3386E products.

TRSF3221E - With operating speeds up to to 1 Mbps, the TRSF3221E consists of a single line RS232 driver/receiver. Flexible control options make this series of parts ideal for 3V to 5V battery powered applications.

• View general RS232 products
  
• View Interface Selection Guide

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Why is a Video Switch Needed?
With today’s growing demand for feature-rich applications, an original equipment manufacturer (OEM) can gain an edge on its competition by providing a high-performance, cost-effective solution to a recurring trend in video applications—multiplexing video signals.

TS3V340 - The TI video switch TS3V340 is a 4-bit 1-of-2 multiplexer/demultiplexer featuring high bandwidth, low on-state resistance and low crosstalk. This combination of features make the series ideal for high frequency video switching.
View all TS3V340 products.

TL52055 - The TL52055 is a wide- bandwidth, 2-input, 1-output, 3-circuit video switch. This device can be used for switching separate video signals signals and component-video signals and is suitable for DTV, LCD, PDP, and other high-quality AV systems.
View all TL52055 products.

• View general video switches, multiplexer products
  
• View Analog Switch Selection Guide (PDF)
  
• View TS5V330 Video Switch App Clip (PDF)
  
• View TL52055 Video Switch App Clip (PDF)

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• View DVI & HDMI video switch products
  
• View DVI/HDMI Video Switch Product Clip

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Digital Switches

Texas Instruments offers a variety of functions in its broad line of Digital Switches. Whether you are searching for a bus, bus exchange, or multiplexer/demultiplexer switch for isolation, translation, or bus-exchange needs, TI's crossbar technology portfolio has the appropriate device for you. Found in the TI Digital Switch portfolio are the CBTLV, CB3Q, and CB3T families, our low-voltage 3.3-V switches, and the general purpose 5-V CBT and CBT-C families.

TS5A26542 - The TS5A26542 is a dual single-pole double-throw (SPDT) analog switch that is designed to operate from 2.25 V to 5.5 V. This device offers a low ON-state resistance with an excellent channel-to-channel ON-state resistance matching, and the break-before-make feature to prevent signal distortion during the transferring of a signal from one path to the another. Additionally, the excellent total harmonic distortion (THD) and very low power consumption make this device ideal for portable audio applications.
View TS5A26542 product listing.

TS5A23159 - The TS5A23159 is a dual single-pole double-throw (SPDT) analog switch that is designed to operate from 2.25 V to 5.5 V. This device offers a low ON-state resistance with an excellent channel-to-channel ON-state resistance matching, and the break-before-make feature to prevent signal distortion during the transferring of a signal from one path to the another. Additionally, the excellent total harmonic distortion (THD) and very low power consumption make this device ideal for portable audio applications.
View TS5A23159 product listing.

SN74CB3Q3257 - The SN74CB3Q3257, a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer, is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data I/O ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q3257 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.
View SN74CB3Q3257 product listing.

3.3-V Digital Switch Portfolio
CBTLV - CBTLV devices can be used in multiprocessor systems as fast bus connections, bus-exchange switches for crossbar systems, ping-pong memory connections, or bus-byte swapping. They also can be used to replace relays, improving connect/disconnect speed and eliminating relay-reliability problems. The CBTLV family, designed to operate at 3.3 V, furthers the goal of an integrated system operating with LVTTL voltages. View products.

CB3Q - The new CB3Q family provides high-performance, low-power replacements for standard bus-interface devices when signal buffering (current drive) is not required. The CB3Q 2.5V/3.3V low-voltage bus-switch family offers very low and flat on-state resistance, 0 to 5V rail-to-rail input/output (I/O) switching and very low I/O capacitance to minimize data bus capacitive loading and signal distortion. The CB3Q bus switch family offers the features and performance necessary to optimize your system designs. View products.

CB3T - The new CB3T family provides high-performance, low-power replacements for standard bus-interface devices when signal buffering (current drive) is not required. The CB3T 2.5V/3.3V bidirectional voltage-translator bus-switch family fully supports mixed-mode signal operation on all data ports, and is ideally suited for mixed 2.5V, 3.3V, and 5.0V system environments. The CB3T bus switch family offers the features and performance necessary to optimize both your mixed-mode signal and power-critical portable system designs. View products.

5-V Digital Switch Portfolio
CBT - In today's computing market, power and speed are two of the main concerns. CBT can address both of these issues in bus-interface applications. CBT enables a bus-interface device to function as a very fast bus switch, effectively isolating buses when the switch is open and offering very little propagation delay when the switch is closed. These devices can function as high-speed bus interfaces between computer-system components such as the central processing unit (CPU) and memory. CBT devices also can be used as 5-V to 3.3-V translators, allowing designers to mix 5-V or 3.3-V components in the same system. View products.

CBT-C - An improved version of the CBT family, CBT-C offers numerous enhancements including:-2V undershoot protection, faster enable/disable times, Ioff feature for partial-power-down applications, and improved ESD protection.

• View general purpose switch, multiplexer products
  
• Digital Bus Switch Selection Guide (PDF)
  
• CBT-C, CB3T, and CB3Q Signal Switch Application Note (PDF)

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LAN/Network Switches

LAN switches in the TS switch product family can be used to replace mechanical relays in LAN applications. LAN switches offer low Ron, wide bandwidth, and low differential crosstalk, making these switches ideal for 10 Base-T and 100 Base-T LAN applications

TS3L500AE - The TS3L500AE is a 16-bit to 8-bit multiplexer/demultiplexer LAN switch with a single select (SEL) input. The device provides additional I/Os for switching status indicating LED signals and includes high ESD protection. Features include a low and flat ON-state resistance, an excellent ON-state resistance match, low input/output capacitance, high bandwidth, low skew, and low crosstalk among channels. These features make this device suitable for various LAN applications, such as 10/100/1000 Base-T. Also, this device replaces mechanical relays in LAN applications and can be used to route signals from a 10/100 Base-T Ethernet transceiver to the RJ-45 LAN connectors in laptops or in docking stations.
View TS3L500AE product listing.

TS3L301 - The TS3L301 is a 16-bit to 8-bit multiplexer/demultiplexer local area network (LAN) switch with a single select (SEL) input. The SEL input controls the data path of the multiplexer/demultiplexer. This device provides a low and flat ON-state resistance and an excellent ON-state resistance match. The low input/output capacitance, high-bandwidth, low skew, and low crosstalk among channels make this device suitable for various LAN applications, such as 10/100/1000 Base-T.
View TS3L301 product listing.

• View LAN/Network switch products
  
• Analog Switch Selection Guide
  
• TS5L100 and TS3L100 LAN Switches (PDF)
  

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Little Logic

• View general logic device products
  
• View specialty logic device products
  
• Little Logic Selection Guide
  
• Little Logic Product Clip (PDF)
  
• Configurable (1G97/98) Little Logic Product Clip (PDF)

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ESD Protection

The TPD4E001 is a four channel ESD-protection circuit designed for Ethernet and FireWire™ applications. This low-capacitance (1.5pF per channel) diode array is designed to protect sensitive electronics attached to communication lines. The TPD4E001 protects against ESD pulses up to ±15-kV Human-Body Model (HBM), ±8-kV Contact Discharge, and ±15-kV Air-Gap Discharge, as specified in IEC 61000-4-2.

The TPD4E002 is a monolithic array designed to protect up to four lines against ESD transients. The monolithic circuit design allows superior matching between the channels and reduced crosstalk. This device is ideal for applications where both reduced line capacitance and board space-savings are required.

The new TPD12S520 is a single-chip ESD solution for the high-definition multimedia interface (HDMI) receiver port. This device provides system-level ESD protection [IEC61000-4-2 (Level 4)] by absorbing the energy associated with the ESD strike. The TPD12S520 adds little or no additional glitch in the high-speed differential signals adding only 0.9pF to the directional signaling (TMDS) lines. Additionally, the low-speed control lines offer voltage level-shifting, eliminating the need for an external voltage-level shifter IC

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Audio Amps - View products

The TAS5706 is a 20-W, high efficiency, digital audio power amplifier for driving stereo bridged speakers. Two serial data inputs allow processing of up to four discrete audio channels and seamless integration to most digital audio processors and MPEG decoders, accepting a wide range of input data and clock rates. A fully programmable data path allows these channels to be routed to the internal speaker drivers or output via the subwoofer or headphone PWM outputs.

The TAS5342L is a high performance, integrated stereo amplifier power stage designed to drive a 4Ώ load at up to 100W into 2 channels. It is also capable of driving 4 channels at 3Ώ to 40W. The TAS5342L has a complete protection system with built in short-circuit protection, over-current protection, under-voltage protection, and over-temperature protection.

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Comparators - View products

The TLV340x is Texas Instruments' first family of nanopower comparators with only 470 nA per channel supply current, which make this device an ideal choice for battery powered portable applications where quiescent current is the primary concern.

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High Frequency/Speed Amps

The THS4011 is a high-speed, single/dual, voltage feedback amplifier ideal for a wide range of applications. The device offers good ac performance, with 290MHz bandwidth, 310V/µs slew rate, and 37ns settling time (0.1%). It has a high output drive capability of 110 mA and draw only 7.8mA supply current per channel. For applications requiring low distortion, the THS4011 operates with a total harmonic distortion (THD) of –80 dBc at f = 1 MHz. For video applications, the THS4011 offers 0.1dB gain flatness to 70MHz, 0.006% differential gain error, and 0.01° differential phase error.

The THS4051 is a general-purpose, single/dual, high-speed voltage feedback amplifier ideal for a wide range of applications including video, communication, and imaging. The device offers good ac performance with 70MHz bandwidth, 240V/us slew rate, and 60ns settling time (0.1%). The THS4051 is stable at all gains for both inverting and non-inverting configurations. The amplifier has a high output drive capability of 100 mA and draws only 8.5mA supply current per channel. Excellent professional video results can be obtained with the low differential gain/phase errors of 0.01%/0.01° and wide 0.1 dB flatness to 30 MHz. For applications requiring low distortion, the THS4051 is ideally suited with total harmonic distortion of 82 dBc at 1 MHz.

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Logarithmic Amps - View products

The LOG102 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current. Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range.

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GP Op Amps< - View products

The OPA365 operational amplifier utilizes an innovative zero-crossover, single input stage architecture to deliver glitchless rail-to-rail performance with ultra-low distortion (0.0006% THD+N). Also featuring low noise (4.5nV/rtHz) and high-speed operation (50MHz gain bandwidth), the device is ideal for a wide variety of single-supply applications in portable instrumentation, data acquisition, audio, portable medical, test and measurement systems.

Texas Instruments Product Category Listing