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1FEATURES

· Qualified for Automotive Applications

· ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

· Supports Mixed-Mode Signal Operation (5-V

Input and Output Voltages With 3.3-V VCC)

· Supports Unregulated Battery Operation Down

to 2.7 V

· Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

· Ioff Supports Partial-Power-Down Mode

Operation

· Bus-Hold Data Inputs Eliminate the Need for

External Pullup Resistors

DESCRIPTION/ORDERING INFORMATION

SN74LVT125-Q1

www.ti.com....................................................................................................................................................... SCBS763B–AUGUST 2003–REVISED APRIL 2008

3.3-V ABT QUADRUPLE BUS BUFFER

WITH 3-STATE OUTPUTS

· Qualified for Automotive Applications

· ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

· Supports Mixed-Mode Signal Operation (5-V

Input and Output Voltages With 3.3-V VCC)

· Supports Unregulated Battery Operation Down

to 2.7 V

· Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

· Ioff Supports Partial-Power-Down Mode

Operation

· Bus-Hold Data Inputs Eliminate the Need for

External Pullup Resistors

This bus buffer is designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a

TTL interface to a 5-V system environment.

The SN74LVT125-Q1 features independent line drivers with 3-state outputs. Each output is in the

high-impedance state when the associated output-enable (OE) input is high.

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 when it is powered down.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.