Skip to main content
Texas Instruments SN74LVC74AD — Logic ICs

SN74LVC74AD Dual D-Type Flip-Flop, 150 MHz, 14-SOIC

MPNSN74LVC74AD
End of Life

Texas Instruments 74LVC series SN74LVC74AD, D-Type flip-flop, dual 1-bit, positive edge triggered, complementary output, set and reset, 150 MHz, 1.65 V to 3.6 V, -40 to 125°C, 14-SOIC.

$1.07Ref. price · indicative, final on quote
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74LVC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LVC74AD specifications
ParameterValue
TypeD-Type
Series74LVC
Output typeComplementary
Trigger typePositive Edge
MountingSurface Mount
Supply voltage1.65V ~ 3.6V
Current - quiescent10 µA
Current - output high, low24mA, 24mA
Clock frequency150 MHz
Operating temperature-40°C ~ 125°C (TA)
PackageTube
FunctionSet(Preset) and Reset
Case14-SOIC (0.154\", 3.90mm Width)
Input capacitance5 pF
Number of elements2
Number of bits per element1
Max propagation delay @ v, max CL5.2ns @ 3.3V, 50pF

Product details

Dual D-type with set/reset — 150 MHz in a 14-SOIC

Each of the two elements stores one bit, clocked at up to 150 MHz. The 1.65 V to 3.6 V supply range lets it bridge 1.8 V, 2.5 V, and 3.3 V logic domains without a level shifter — useful in mixed-voltage boards where a single logic family must talk to both a low-voltage MCU and a legacy 3.3 V peripheral.

5.2 ns propagation delay — timing budget for the bus

At 3.3 V with a 50 pF load, the max propagation delay is 5.2 ns. That is the number to enter into your timing closure spreadsheet for the data-to-clock path. The 24 mA symmetric output drive (both high and low) keeps edge rates fast enough to meet setup times on downstream loads without extra buffering. Input capacitance is 5 pF, so fanout on a 3.3 V bus is manageable — figure 10 to 15 loads before the rise time degrades.

The quiescent current sits at only 10 µA, so it adds negligible draw to a battery-backed or always-on rail.

Frequently asked questions

Is SN74LVC74AD obsolete?

No. The SN74LVC74AD has an Active product status per the current lifecycle record. There is no discontinuation notice or last-time-buy date on file.

What is the difference between SN74LVC74A and SN74LVC74AD?

The suffix 'D' indicates the 14-SOIC package (0.154", 3.90 mm width). The SN74LVC74A base part number is available in other package options; the 'D' version is the surface-mount SOIC variant.