1 Features

• Provides bidirectional voltage translation with no

direction control required

• Allows voltage level translation

from 0.95 V up to 5 V

• Provides direct interface with GTL, GTL+, LVTTL/

TTL, and 5-V CMOS levels

• Supports 50 MHz up or down translation at ≦20 pF

capacitive load

• Low ON-state resistance between input and output

pins (Sn/Dn)

• Supports hot insertion

• No power supply required – will not latch up

• 5-V-tolerant inputs

• Low standby current

• Flow-through pinout for ease of printed circuit

board trace routing

2 Applications

• Bidirectional or unidirectional applications requiring

voltage-level translation from any voltage

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

• Low voltage processor I2C port translation to 3.3-V

or 5-V I2C bus signal levels

• GTL/GTL+ translation to LVTTL/TTL signal levels

• HPC server

• Dialysis machines

• Service router

• Servers

3 Description

The SN74GTL2003 device provides eight NMOS pass

transistors (Sn and Dn) with a common gate (GREF)

and a reference transistor (SREF and DREF). The low

ON-state resistance of the switch allows connections

to be made 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).

All transistors in the SN74GTL2003 have the

same electrical characteristics, and there is minimal

deviation from one output to another in voltage or

propagation delay. This offers superior matching over

discrete transistor voltage-translation solutions where

the fabrication of the transistors is not symmetrical.

With all transistors being identical, the reference

transistor (SREF/DREF) can be located on any of

the other eight matched Sn/Dn transistors, allowing

for easier board layout. The translator transistors

with integrated ESD circuitry provides excellent ESD

protection.