SN54LVTH16543, SN74LVTH16543

3.3-V ABT 16-BIT REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS699D – JULY 1997 – REVISED APRIL 1999

2

POST OFFICE BOX 655303

description (continued)

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

disables the outputs, preventing damaging current backflow through the devices when they are powered down.

The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,

which prevents driver conflict.

The SN54LVTH16543 is characterized for operation over the full military temperature range of –55

°C to 125°C.

The SN74LVTH16543 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE†

(each 8-bit section)

INPUTS

OUTPUT

CEAB

LEAB

OEAB

A

B

H

X

X

X

Z

X

XH

X

Z

L

HL

X

B0‡

L

LL

L

L

L

L

L

H

H

† A-to-B data flow is shown; B-to-A flow control is the

same except that it uses CEBA, LEBA, and OEBA.

‡ Output level before the indicated steady-state

input conditions were established