SN74LVCH16541ADLR.B中文资料德州仪器数据手册PDF规格书

FEATURES

· Member of the Texas Instruments Widebus™

Family

· Operates From 1.65 V to 3.6 V

· Inputs Accept Voltages to 5.5 V

· Max tpd of 4.2 ns at 3.3 V

· Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

· Typical VOHV (Output VOH Undershoot)

>2 V at VCC = 3.3 V, TA = 25°C

· Ioff Supports Partial-Power-Down Mode

Operation

· Supports Mixed-Mode Signal Operation on All

Ports (5-V Input/Output Voltage

With 3.3-V VCC)

· Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

· Latch-Up Performance Exceeds 250 mA Per

JESD 17

· ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

This 16-bit buffer/driver is designed for 1.65-V to 3.6-V VCC operation.

The SN74LVCH16541A is a noninverting 16-bit buffer composed of two 8-bit sections with separate

output-enable signals. For either 8-bit buffer section, the two output-enable (1OE1 and 1OE2 or 2OE1 and

2OE2) inputs must be low for the corresponding Y outputs to be active. If either output-enable input is high, the

outputs of that 8-bit buffer section are in the high-impedance state.

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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators

in a mixed 3.3-V/5-V system environment.

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.