GTL2003 Datasheet, PDF (4/19 Pages) NXP Semiconductors – 8-bit bidirectional low voltage translator

NXP Semiconductors
GTL2003
8-bit bidirectional low voltage translator
7. Functional description
Refer also to Figure 1 “Functional diagram”.
7.1 Function selection
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
H
H
0V
X
H
H
V_T[2]
H
H
H
V_T[2]
L
L
L
0 V − V_T[2]
X
Output Sn
X
V_T[2][3]
L^[4]
X
[1] GREF should be at least 1.5 V higher than SREF for best translator operation.
[2] V_T is equal to the SREF voltage.
[3] Sn is not pulled up or pulled down.
[4] Sn follows the Dn input LOW.
Transistor
off
on
on
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
H
H
0V
X
H
H
V_T[2]
V_T[2]
H
H
V_T[2]
L
L
L
0 V − V_T[2]
X
Output Dn
X
H^[3]
L^[4]
X
[1] GREF should be at least 1.5 V higher than SREF for best translator operation.
[2] V_T is equal to the SREF voltage.
[3] Dn is pulled up to V_CC through an external resistor.
[4] Dn follows the Sn input LOW.
Transistor
off
nearly off
on
off
GTL2003_1
Product data sheet
Rev. 01 — 27 July 2007
© NXP B.V. 2007. All rights reserved.
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