GTL2003_1

© NXP B.V. 2007. All rights reserved.

Product data sheet

Rev. 01 — 27 July 2007

4 of 19

NXP Semiconductors

GTL2003

8-bit bidirectional low voltage translator

7.

Functional description

Refer also to Figure 1 “Functional diagram”.

7.1 Function selection

[1]

GREF should be at least 1.5 V higher than SREF for best translator operation.

[2]

[3]

Sn is not pulled up or pulled down.

[4]

Sn follows the Dn input LOW.

[1]

GREF should be at least 1.5 V higher than SREF for best translator operation.

[2]

[3]

[4]

Dn follows the Sn input LOW.

Table 4.

Function selection, HIGH-to-LOW translation

Assumes Dn is at the higher voltage level.

H = HIGH voltage level; L = LOW voltage level; X = Don’t care

GREF[1]

DREF

SREF

Input Dn

Output Sn

Transistor

HH0 V

X

X

off

on

LL[4]

on

LL0 V

− VT[2]

X

X

off

Table 5.

Function selection, LOW-to-HIGH translation

Assumes Dn is at the higher voltage level.

H = HIGH voltage level; L = LOW voltage level; X = Don’t care

GREF[1]

DREF

SREF

Input Sn

Output Dn

Transistor

HH0 V

X

X

off

H[3]

nearly off

LL[4]

on

LL0 V

− VT[2]

X

X

off