4-bit dual-supply bus transceiver with config voltage translation



Product details


Technology Family AVC Applications JTAG Bits (#) 4 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog open-in-new Find other Unidirectional voltage translators

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NFBGA (ZWA) 11 uCSP (ZSU) 11 3 mm² 2 x 1.4 open-in-new Find other Unidirectional voltage translators


  • Wide operating VCC range of 0.9 V to 3.6 V
  • 3.6-V I/O Tolerant to support mixed-mode signal operation
  • Max tpd of 3.7 ns at 3.3 V
  • Balanced propagation delays: tPLH = tPHL
  • Low static-power consumption, 5-µA Max ICC
  • Outputs disabled if either VCC goes to 0V
  • ±3-mA Output drive at 1.8 V
  • 26-Ω series resistor on A-side outputs
  • Ioff supports partial power-down-mode operation
  • Input hysteresis allows slow input transition and better switching noise immunity at input
  • Maximum data rates
    • 380 Mbps (1.8-V to 3.3-V translation)
    • 200 Mbps (<1.8-V to 3.3-V translation)
    • 200 Mbps (translate to 2.5 V or 1.8 V)
    • 150 Mbps (translate to 1.5 V)
    • 100 Mbps (translate to 1.2 V)
  • Latch-up performance exceeds 100 mA Per JESD 78, Class II
  • ESD protection exceeds JESD 22
    • 2000-V human-body model (A114-A)
    • 500-V charged-device model (C101)

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This 4-bit non-inverting bus transceiver uses two separate configurable power-supply rails to enable asynchronous communication between B-port inputs and A-port outputs. The A port is designed to track VCCA while the B port is designed to track VCCB. Both VCCA and VCCB are configurable from 0.9 V to 3.6 V.

The SN74AVC4T234 solution offers the industry’s low-power needs in battery-powered portable applications by ensuring both a very low static and dynamic power consumption across the entire VCC range of 0.9 V to 3.6 V, resulting in an increased battery life. This product also maintains excellent signal integrity.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, then A-side ports are in the high-impedance state.

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Technical documentation

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Type Title Date
* Datasheet SN74AVC4T234 4-Bit Dual-Supply Bus Transceiver With Config Voltage Translation datasheet (Rev. B) Jul. 01, 2020
Selection guides Voltage translation buying guide Jun. 13, 2019
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
More literature Voltage-Level Translation Guide (Rev. H) Aug. 31, 2015
Application notes Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) Apr. 30, 2015
User guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
Application notes Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. A) Jul. 08, 2004
Application notes Selecting the Right Level Translation Solution (Rev. A) Jun. 22, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
More literature LCD Module Interface Application Clip May 09, 2003
User guides AVC Advanced Very-Low-Voltage CMOS Logic Data Book, March 2000 (Rev. C) Aug. 20, 2002
More literature Standard Linear & Logic for PCs, Servers & Motherboards Jun. 13, 2002
Application notes 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) May 22, 2002
Application notes Dynamic Output Control (DOC) Circuitry Technology And Applications (Rev. B) Jul. 07, 1999
Application notes AVC Logic Family Technology and Applications (Rev. A) Aug. 26, 1998

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