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SN74AVCH1T45
  • SN74AVCH1T45
  • SN74AVCH1T45
  • SN74AVCH1T45
  • SN74AVCH1T45

SN74AVCH1T45

ACTIVE

Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

Texas Instruments SN74AVCH1T45 Product Info

1 April 2026 2

Parameters

Bits (#)

1

Data rate (max) (Mbps)

500

Topology

Push-Pull

Vin (min) (V)

1.2

Vin (max) (V)

3.6

Vout (min) (V)

1.2

Vout (max) (V)

3.6

Applications

GPIO

Features

Bus-hold, Overvoltage tolerant inputs, Partial power down (Ioff)

Prop delay (ns)

4.7

Technology family

AVC

Supply current (max) (mA)

0.02

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Package

DSBGA (YZP)-6-2.1875 mm² 1.75 x 1.25

Features

  • Available in Texas Instruments’ NanoStar™ integrated circuit package
  • Available in Texas Instruments’ NanoFree™ package
  • 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 4.6V tolerant
  • Ioff supports partial-power-down mode operation
  • Typical max data rates
    • 500Mbps (1.8V to 3.3V translation)
    • 320Mbps (<1.8V to 3.3V translation)
    • 320Mbps (translate to 2.5V or 1.8V)
    • 280Mbps (translate to 1.5V)
    • 240Mbps (translate to 1.2V)
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • Human-Body Model (A114-A): 2000V
    • Machine Model (A115-A): 200V
    • Charged-Device Model (C101): 1000V
  • Available in Texas Instruments’ NanoStar™ integrated circuit package
  • Available in Texas Instruments’ NanoFree™ package
  • 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 4.6V tolerant
  • Ioff supports partial-power-down mode operation
  • Typical max data rates
    • 500Mbps (1.8V to 3.3V translation)
    • 320Mbps (<1.8V to 3.3V translation)
    • 320Mbps (translate to 2.5V or 1.8V)
    • 280Mbps (translate to 1.5V)
    • 240Mbps (translate to 1.2V)
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • Human-Body Model (A114-A): 2000V
    • Machine Model (A115-A): 200V
    • Charged-Device Model (C101): 1000V

Description

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 1.2V to 3.6V. The B port is designed to track VCCB, which accepts any supply voltage from 1.2V to 3.6V. This feature allows for universal low-voltage, bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V 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.

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