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Texas Instruments SN74S08D — Logic ICs

SN74S08D 74S Quad 2-Input AND Gate, 7.5ns, SOIC-14

MPNSN74S08D
End of Life

TI SN74S08D, 74S series, Quad 2-Input AND Gate, 4.75V–5.25V supply, 7.5ns @ 5V/50pF, 0°C–70°C, 14-SOIC, Tube.

$1.77Ref. price · indicative, final on quote
Texas Instruments SN74S08D datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74S
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74S08D specifications
ParameterValue
Series74S
Logic typeAND Gate
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
Current - output high, low1mA, 20mA
I/O channels2
Operating temperature0°C ~ 70°C
PackageTube
Case14-SOIC (0.154\", 3.90mm Width)
Number of circuits4
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL7.5ns @ 5V, 50pF

Product details

Quad 2-input AND gate in SOIC-14 — what this part is

The TI SN74S08D is a 74S-series quad 2-input AND gate in a 14-SOIC package. It takes four independent AND gates, each with two inputs, and drives standard TTL loads. The 74S family uses Schottky clamping to reduce propagation delay — this part delivers 7.5 ns typical at 5 V into 50 pF, which keeps it fast enough for bus decoding, control signal gating, and address latching in 5 V digital systems. Supply range is 4.75 V to 5.25 V, the classic 5 V TTL rail. Outputs source 1 mA and sink 20 mA, enough to drive one or two standard TTL loads per gate.

Maximum propagation delay is 7.5 ns at 5 V and 50 pF load.

Frequently asked questions

What is the propagation delay of SN74S08D?

Maximum propagation delay is 7.5 ns at 5 V supply and 50 pF load.

Is SN74S08D a direct replacement for SN74LS08D?

The SN74S08D is a faster Schottky-clamped version of the LS08. Both are quad 2-input AND gates in the same SOIC-14 footprint and share the same 5 V supply rail, but the S version has a 7.5 ns delay versus roughly 15 ns for the LS. If the LS08 was marginal on timing, the S08 will improve margin; if the LS08 was fine, the S08 works as a drop-in replacement electrically and mechanically.