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SN74ABT16543DGGR

SN74ABT16543DGGR 74ABT Transceiver, 56-TSSOP, 32mA/64mA

MPNSN74ABT16543DGGR
End of Life

Texas Instruments 74ABT series SN74ABT16543DGGR, Logic Transceiver, Non-Inverting, 3-State, 2-Element, 8-Bit, 4.5V to 5.5V Supply, 32mA/64mA Output, -40°C to 85°C, 56-TSSOP.

$1.93Ref. price · indicative, final on quote
Texas Instruments SN74ABT16543DGGR datasheet (PDF)
Packaging56-TFSOP (0.240", 6.10mm Width)
RoHSROHS3 Compliant
Series74ABT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74ABT16543DGGR specifications
ParameterValue
Series74ABT
Logic typeTransceiver, Non-Inverting
Output type3-State
MountingSurface Mount
Voltage4.5V ~ 5.5V
Current - output high, low32mA, 64mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case56-TFSOP (0.240\", 6.10mm Width)
Number of elements2
Number of bits per element8

Product details

Dual 8-bit transceiver for 5V buses

It packs two 8-bit elements into a 56-TSSOP package, delivering 32mA source and 64mA sink per output — enough drive for heavily loaded backplane or memory-interface buses without external buffers.

Why the 5V-only supply matters

This part runs strictly on 4.5V to 5.5V — it is not a 3.3V-tolerant transceiver. If your bus is 3.3V or mixed-voltage, the SN74LVTH16245ADGVR (2.7V to 3.6V supply) is the functional alternative in a similar footprint. The 64mA sink capability on the low side handles fan-out to dozens of LSTTL or CMOS loads on a 5V backplane, but the same drive at 3.3V would exceed the output overvoltage limit. Stay inside the rated supply range.

No LTB window to chase, no successor to qualify — the BOM line is stable for new builds and ongoing production.

Frequently asked questions

Is SN74ABT16543DGGR compatible with 3.3V logic?

No. The supply range is 4.5V to 5.5V, and the inputs and outputs are not 3.3V-tolerant. For a 3.3V bus, consider the SN74LVTH16245ADGVR which operates from 2.7V to 3.6V.

What is the equivalent or replacement for SN74ABT16543DGGR?

Within the same 5V 74ABT family, the single-element SN74ABT2245DW (8-bit, same drive) is a functional subset but only one element. For a dual 8-bit transceiver at 3.3V, the SN74LVTH16245ADGVR is the closest pin-compatible alternative, though it requires a lower supply voltage.