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Texas Instruments SN74ABT533AN — Logic ICs

SN74ABT533AN Texas Instruments 74ABT D-Type Latch

MPNSN74ABT533AN
End of Life

Texas Instruments 74ABT series, SN74ABT533AN, D-Type Transparent Latch, 8:8 circuit, tri-state outputs, 4.9ns propagation delay, 32mA/64mA output drive, 4.5V~5.5V supply, -40°C~85°C, Through Hole 20-DIP (0.300", 7.62mm), 20-PDIP.

$1.05Ref. price · indicative, final on quote
Packaging20-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74ABT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74ABT533AN specifications
ParameterValue
Series74ABT
Logic typeD-Type Transparent Latch
Output typeTri-State
MountingThrough Hole
Voltage4.5V ~ 5.5V
Current - output high, low32mA, 64mA
Operating temperature-40°C ~ 85°C
Circuit8:8
PackageTube
Case20-DIP (0.300\", 7.62mm)
Independent circuits1
Delay time - propagation4.9ns

Product details

74ABT533 — 8-bit transparent latch with 4.9 ns propagation delay

It provides eight latches with tri-state outputs, each capable of sinking 64 mA or sourcing 32 mA, making it suitable for driving heavily loaded buses or multiple fan-out in industrial control, telecom, and data-acquisition boards. The 4.9 ns propagation delay keeps up with fast memory and processor interfaces operating at 5 V ± 0.5 V.

32 mA / 64 mA output drive — bus-driving headroom

The 32 mA high-level and 64 mA low-level output current ratings are the strongest in the 74ABT latch family. This drive strength allows the SN74ABT533AN to directly drive a 50 Ω backplane or multiple TTL loads without external buffers. In a typical motor-drive control board, the latch can hold the state of eight digital outputs while the processor reconfigures the PWM registers, and the high sink current handles the transient inrush of optocoupler LEDs.

Industrial temperature range and 5 V supply

It is ROHS3 compliant.

Frequently asked questions

Is the SN74ABT533AN obsolete?

No.

What is the SN74ABT533AN used for?

It is an 8-bit D-type transparent latch with tri-state outputs, used for temporary data storage, bus isolation, and output expansion in 5 V digital systems such as industrial controllers, telecom line cards, and data-acquisition front ends.

Is the SN74ABT533AN a latch?

Yes. It is a D-type transparent latch — when the latch-enable input is high, the outputs follow the data inputs; when low, the outputs hold the last state.

What is the closest functional equivalent to the SN74ABT533AN?

The 74FCT573APC is a functional equivalent: also an 8-bit D-type transparent latch with tri-state outputs in a through-hole package.