SN74ALS74ADR

Texas Instruments · 74ALS Series

Texas Instruments 74ALS series SN74ALS74ADR, D-Type flip-flop, dual 1-bit, positive edge trigger, complementary outputs, set/preset and reset, 34 MHz, 4.5-5.5V, 14-SOIC, 0°C to 70°C.

Texas Instruments SN74ALS74ADR
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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

SN74ALS74ADR specifications
Parameter / AttributeSpecification / Value
TypeD-Type
Series74ALS
Output typeComplementary
Trigger typePositive Edge
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Current - quiescent4 mA
Current - output high, low400µA, 8mA
Clock frequency34 MHz
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionSet(Preset) and Reset
Case14-SOIC (0.154\", 3.90mm Width)
Number of elements2
Number of bits per element1
Max propagation delay @ v, max CL18ns @ 5V, 50pF

Technical details

Dual D-type flip-flop with set and reset — 34 MHz, 5V only

Each of the two elements stores one bit. It operates from a 4.5 V to 5.5 V supply — strictly a 5 V rail part — and is specified over the commercial temperature range of 0°C to 70°C. Propagation delay is 18 ns typical at 5 V into a 50 pF load, which sets the timing budget for bus-oriented or control-register applications in office equipment, appliances, and indoor PCB designs. The package is a 14-SOIC (3.90 mm width), surface-mount, and the part is ROHS3 compliant.

The 34 MHz clock frequency and 18 ns propagation delay (at 5 V, 50 pF) define the usable speed grade for this flip-flop. Quiescent current is 4 mA, and the output drive is 400 µA source, 8 mA sink.

SN74ALS74ADR
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