S

REF

D

REF

G

REF

S

1

D

1

S

2

D

2

S

3

D

3

20

2

3

4

5

19

18

17

16

SN74GTL2003

SCDS305B – FEBRUARY 2011 – REVISED JUNE 2015

www.ti.com

8 Detailed Description

8.1 Overview

with minimal propagation delay. With no direction control pin required, the device allows bidirectional voltage

translations any voltage (0.95 V to 5 V) to any voltage (0.95 V to 5 V).

When the Sn or Dn port is LOW, the clamp is in the ON state and a low-resistance connection exists between

the Sn and Dn ports. Assuming the higher voltage is on the Dn port, when the Dn port is HIGH, the voltage on

is pulled to VCC by the pullup resistors.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Provides Bidirectional Voltage Translation With No Direction Control Required

Because the circuit acts essentially as a pass transistor, no direction pin is needed, as data is allowed to flow

both ways.

8.3.2 Flow Through Pinout

Allocated pins for input and output A on right side and input and output B on left side. Reduces the need for

multi-layer board layout or long traces through system.

8

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