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.