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SN74AXCH1T45 ACTIVE Single-bit dual-supply bus transceiver Pin-to-pin upgrade with a wider voltage range and improved performance
Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

SN74AVCH1T45

ACTIVE

Product details

Technology Family AVC Applications GPIO Bits (#) 1 High input voltage (Min) (Vih) 1 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 1.2 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog
Technology Family AVC Applications GPIO Bits (#) 1 High input voltage (Min) (Vih) 1 High input voltage (Max) (Vih) 3.6 Vout (Min) (V) 1.2 Vout (Max) (V) 3.6 IOH (Max) (mA) -12 IOL (Max) (mA) 12 Rating Catalog
DSBGA (YZP) 6 2 mm² .928 x 1.428 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1
  • Available in the Texas Instruments NanoStar&trade
    and NanoFree™ Packages
  • Control Inputs (DIR) VIH and VIL Levels Are
    Referenced to VCCA Voltage
  • Bus Hold on Data Inputs Eliminates the Need for
    External Pullup and Pulldown Resistors
  • VCC Isolation
  • Fully Configurable Dual-Rail Design
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Typical Max Data Rates
    • 500 Mbps (1.8-V to 3.3-V Translation)
    • 320 Mbps (<1.8-V to 3.3-V Translation)
    • 320 Mbps (Translate to 2.5 V or 1.8 V)
    • 280 Mbps (Translate to 1.5 V)
    • 240 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • Human-Body Model (A114-A): 2000 V
    • Machine Model (A115-A): 200 V
    • Charged-Device Model (C101): 1000 V
  • Available in the Texas Instruments NanoStar&trade
    and NanoFree™ Packages
  • Control Inputs (DIR) VIH and VIL Levels Are
    Referenced to VCCA Voltage
  • Bus Hold on Data Inputs Eliminates the Need for
    External Pullup and Pulldown Resistors
  • VCC Isolation
  • Fully Configurable Dual-Rail Design
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Typical Max Data Rates
    • 500 Mbps (1.8-V to 3.3-V Translation)
    • 320 Mbps (<1.8-V to 3.3-V Translation)
    • 320 Mbps (Translate to 2.5 V or 1.8 V)
    • 280 Mbps (Translate to 1.5 V)
    • 240 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • Human-Body Model (A114-A): 2000 V
    • Machine Model (A115-A): 200 V
    • Charged-Device Model (C101): 1000 V

The SN74AVCH1T45 is a single-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 1.2 V to 3.6 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, and 3.3-V voltage nodes.

The SN74AVCH1T45 is designed for asynchronous communication between two data buses. The device transmits data from either the A bus to the B bus, or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input.

The SN74AVCH1T45 is designed so that the DIR input is referenced to VCCA.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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.

The VCC isolation feature ensures that if either VCCA or VCCB is at GND, then the outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.

NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.

The SN74AVCH1T45 is a single-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 1.2 V to 3.6 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, and 3.3-V voltage nodes.

The SN74AVCH1T45 is designed for asynchronous communication between two data buses. The device transmits data from either the A bus to the B bus, or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input.

The SN74AVCH1T45 is designed so that the DIR input is referenced to VCCA.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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.

The VCC isolation feature ensures that if either VCCA or VCCB is at GND, then the outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.

NanoFree package technology is a major breakthrough in IC packaging concepts, using the die as the package.

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Technical documentation

Design & development

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Evaluation board

5-8-LOGIC-EVM — Generic logic EVM supporting 5 through 8 pin DCK, DCT, DCU, DRL, and DBV packages

Flexible EVM designed to support any device that has a DCK, DCT, DCU, DRL, or DBV package in a 5 to 8 pin count.
In stock
Limit: 5
Evaluation board

AVCLVCDIRCNTRL-EVM — Generic EVM for Direction-Controlled Bidirectional Translation Device Supporting AVC and LVC

The generic EVM is designed to support one, two, four and eight channel LVC and AVC direction-controlled translation devices. It also supports the bus hold and automotive -Q1 devices in the same number of channels. The AVC are low voltage translation devices with lower drive strength of 12mA. LVC (...)

In stock
Limit: 5
Simulation model

SN74AVCH1T45 IBIS Model (Rev. A)

SCEM438A.ZIP (118 KB) - IBIS Model
Reference designs

TIDA-00352 — SDI Video Aggregation Reference Design

This verified reference design is a complete four channel SDI aggregation and de-aggregation solution. One TLK10022 is used to aggregate four synchronous HD-SDI sources together into one 5.94 Gbps serial link. The serial data is transferred via copper or optical fiber where a second TLK10022 is (...)
Reference designs

TIDA-00309 — DisplayPort Video 4:1 Aggregation Reference Design

This verified reference design is a complete four channel DisplayPort aggregation and de-aggregation solution. One TLK10022 is used to aggregate four synchronous DisplayPort (DP) sources together into one 10.8 Gbps serial link. The serial data is transferred via copper or optical fiber where a (...)
Package Pins Download
DSBGA (YZP) 6 View options
SC70 (DCK) 6 View options
SOT-23 (DBV) 6 View options

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