SN54ALVTH16501, SN74ALVTH16501

2.5-V/3.3-V 18-BIT UNIVERSAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCES071D – JUNE 1996 – REVISED JANUARY 1999

2

POST OFFICE BOX 655303

description (continued)

and OEAB should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined

by the current-sinking/current-sourcing capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN54ALVTH16501 is characterized for operation over the full military temperature range of –55

°C to

125

°C. The SN74ALVTH16501 is characterized for operation from –40°C to 85°C.

FUNCTION TABLE†

INPUTS

OUTPUT

OEAB

LEAB

CLKAB

A

B

L

X

X

X

Z

H

HX

L

L

H

HX

H

H

H

L=

L

L

H

L

↑

HH

H

LH

X

B0‡

H

L

L

X

B0§

† A-to-B data flow is shown: B-to-A flow is similar but

uses OEBA, LEBA, and CLKBA.

‡ Output level before the indicated steady-state input

conditions were established, provided that CLKAB

was high before LEAB went low

§ Output level before the indicated steady-state input

conditions were established