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Texas Instruments SN74AC74DR — Logic ICs

SN74AC74DR D-Type Flip-Flop, 160 MHz, 14-SOIC, Active

MPNSN74AC74DR
End of Life

Texas Instruments 74AC series D-Type flip-flop, SN74AC74DR, dual 1-bit positive-edge triggered with set and reset, complementary outputs, 160 MHz clock, 6 ns propagation delay at 5V/50pF, 2V-6V supply, -40°C to 85°C, 14-SOIC package.

$0.55Ref. price · indicative, final on quote
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74AC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AC74DR specifications
ParameterValue
TypeD-Type
Series74AC
Output typeComplementary
Trigger typePositive Edge
MountingSurface Mount
Voltage2V ~ 6V
Current - quiescent2 µA
Current - output high, low24mA, 24mA
Frequency160 MHz
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionSet(Preset) and Reset
Case14-SOIC (0.154\", 3.90mm Width)
Input capacitance3 pF
Number of elements2
Number of bits per element1
Max propagation delay @ v, max CL6ns @ 5V, 50pF

Product details

What this dual flip-flop brings to the board

The SN74AC74DR is a dual D-type flip-flop from TI's 74AC family, packing two independent positive-edge-triggered flip-flops with individual set and reset pins into a 14-SOIC package. Each flip-flop stores one bit and provides complementary Q and Q̅ outputs. The 160 MHz clock frequency and 6 ns propagation delay at 5V, 50pF make it a solid choice for high-speed data latching, clock dividers, and state machines in industrial control, telecom, and instrumentation where you need to keep timing margins tight.

The 2V to 6V supply range covers both 3.3V and 5V logic rails without a level translator, which simplifies mixed-voltage designs. Quiescent current sits at 2 µA, so this part won't eat into your standby budget. Input capacitance is 3 pF, light enough that a 160 MHz clock source won't see a heavy load.

The 14-SOIC (0.154", 3.90 mm width) body is a standard surface-mount footprint. Board layout matches the common SOIC-14 land pattern; no surprises for the PCB designer.

No need to derate for cold starts or summer heat inside a panel.

TI lists the SN74AC74DR as Active.

Frequently asked questions

Is SN74AC74DR RoHS compliant and lead-free?

Yes, the SN74AC74DR is ROHS3 Compliant, meeting the latest EU RoHS directive without lead or other restricted substances.

What is the propagation delay of SN74AC74DR?

Maximum propagation delay is 6 ns at 5V supply with a 50 pF load. That's the figure to use for timing closure on a 5V bus.

Where can I buy SN74AC74DR?

Contact our sales team for current pricing and lead time. Availability is confirmed at quote time.