Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

Extended Temperature Performance of

–55°C to 125°C

Enhanced Diminishing Manufacturing

Sources (DMS) Support

Enhanced Product-Change Notification

Qualification Pedigree†

Operating Range 2-V to 5.5-V VCC

Latch-Up Performance Exceeds 250 mA Per

JESD 17

ESD Protection Exceeds 1000 V Per

MIL-STD-833, Method 3015; Exceeds 100 V

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

description/ordering information

The SN74AHC245 octal bus transceiver is designed for asynchronous two-way communication between data

buses. The control-function implementation minimizes external timing requirements.

This device allows data transmission 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

device so that the buses effectively are isolated.

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.