Technological Arts Inc.

Product Info

This breakout board provides eight bi-directional 3V/5V level translation, ideal for such things as SPI (e.g. SD card interface, MP3 chip interface) and port interfacing. The 20-pin TSSOP level shifter chip is mounted on a carrier and fits a standard 0.6" wide DIP footprint.

Features:

• enables 3V peripherals to be used in 5V systems
• plugs into any standard solderless breadboard
• gold-plated 0.025" square-pin terminations
• can be plugged into a standard 0.6" wide DIP socket
• end-to-end stackable
• based on T.I. TXB0108PWR:
  • 8-Bit Bidirectional Voltage-Level Translator
  • Auto Direction Sensing
  • +/-15-kV ESD Protection
• 20 Mbps to 100 Mbps throughput, depending on voltage differential
• direct one-to-one pin-numbering

Details

This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA should not exceed VCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.

Resources

Chip data sheet available here:

• Texas Instruments TXB0108