Support Mixed-Mode Signal Operation (5-V

Input and Output Voltages With 3.3-V VCC)

Support Unregulated Battery Operation

Down to 2.7 V

Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

B-Port Outputs Have Equivalent 22-Ω

Series Resistors, So No External Resistors

Are Required

Ioff and Power-Up 3-State Support Hot

Insertion

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

Latch-Up Performance Exceeds 500 mA Per

JESD 17

ESD Protection Exceeds JESD 22

− 2000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

description/ordering information

These octal bus transceivers are 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.

These devices are designed for asynchronous

communication between data buses. They

transmit data from the A bus to the B bus or from

the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)

input can be used to disable the devices so the buses are effectively isolated.