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Texas Instruments SN74AS74AN — Logic ICs

SN74AS74AN D-Type Flip-Flop, 105 MHz, 14-PDIP

MPNSN74AS74AN
End of Life

Texas Instruments 74AS series, SN74AS74AN, D-Type flip-flop, Positive Edge Triggered, Complementary output, 105 MHz, 4.5V to 5.5V, Through Hole, 14-DIP.

$1.67Ref. price · indicative, final on quote
Texas Instruments SN74AS74AN datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74AS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AS74AN specifications
ParameterValue
TypeD-Type
Series74AS
Output typeComplementary
Trigger typePositive Edge
MountingThrough Hole
Supply voltage4.5V ~ 5.5V
Current - quiescent16 mA
Current - output high, low2mA, 20mA
Clock frequency105 MHz
Operating temperature0°C ~ 70°C (TA)
PackageTube
FunctionSet(Preset) and Reset
Case14-DIP (0.300\", 7.62mm)
Number of elements2
Number of bits per element1
Max propagation delay @ v, max CL9ns @ 5V, 50pF

Product details

It is part of the 74AS (Advanced Schottky) bipolar logic family, which offers a speed-power trade-off between the earlier 74S and the later 74F series. Typical applications include register files, shift registers, frequency dividers, and control-latch functions in 5 V digital systems operating in commercial indoor environments (0°C to 70°C ambient).

The 105 MHz maximum clock frequency and 9 ns propagation delay at 5 V, 50 pF define the timing envelope.

Output drive — asymmetric and intentional

The SN74AS74AN sources 2 mA and sinks 20 mA per output.

Supply and temperature — 5 V nominal, indoor only

Supply range is 4.5 V to 5.5 V; operating temperature is 0°C to 70°C.

The SN74AS74AN is listed as Active on the manufacturer's lifecycle status, with RoHS3 compliance (lead-free).

Frequently asked questions

What is the difference between SN74AS74AN and SN74LS74AN?

The SN74AS74AN is the faster, higher-drive member of the pair. It clocks at 105 MHz versus roughly 40 MHz for the 74LS equivalent, and its propagation delay is 9 ns versus about 15 ns for the 74LS. The AS version also sinks 20 mA per output versus 8 mA for the LS. Both are dual D-type flip-flops in the same 14-pin DIP footprint, so they are pin-compatible — but the AS part draws higher quiescent current (16 mA vs roughly 4 mA for the LS). Choose the AS when you need the extra speed or drive; choose the LS when power budget is tighter.

What are the equivalents or alternatives to SN74AS74AN?

The closest functional equivalent in a different logic family is the 74F74PC (Fairchild/ON Semiconductor), which is also a dual D-type positive-edge-triggered flip-flop in a 14-pin DIP, with a similar 80 MHz clock frequency and 10 ns propagation delay at 5 V. The 74F part has lower output drive (1 mA source, 20 mA sink) and higher quiescent current (about 20 mA). For a lower-speed, lower-power alternative, the SN74LS74AN (74LS family) is pin-compatible and widely available. No exact second-source with the same 74AS speed grade is listed.