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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

SN74ALVCHR16601

18-BIT UNIVERSAL BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

SCES123I – SEPTEMBER 1997 – REVISED SEPTEMBER 2004

Data flow for B to A is similar to that of A to B, but uses OEBA, LEBA, CLKBA, and CLKENBA.

The outputs include equivalent 26-

Ω series resistors to reduce overshoot and undershoot.

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

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.

INPUTS

OUTPUT

B

CLKENAB

OEAB

LEAB

CLKAB

A

X

H

X

X

X

Z

X

L

H

X

L

L

X

L

H

X

H

H

H

L

L

X

X

L

L

L

↑

L

L

L

L

L

↑

H

H

L

L

L

L or H

X

(1)

A-to-B data flow is shown; B-to-A flow is similar, but uses OEBA, LEBA, CLKBA, and CLKENBA.

(2)

Output level before the indicated steady-state input conditions were established

2