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Texas Instruments SN74HCT74DT — Discrete Semiconductors
Texas Instruments

SN74HCT74DT D-Type Flip-Flop, 46 MHz, 14-SOIC

MPNSN74HCT74DT
End of Life

Texas Instruments 74HCT series, SN74HCT74DT, D-Type flip-flop, dual 1-bit, positive-edge triggered, complementary outputs, set/preset and reset, 46 MHz clock, 4.5V–5.5V supply, -40°C to 85°C, 14-SOIC surface mount.

$1.16Ref. price · indicative, final on quote
SN74HCT74DT datasheet
Packaging14-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74HCT74DT Technical Specifications
ParameterValue
TypeD-Type
Series74HCT
Output typeComplementary
Trigger typePositive Edge
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Current - quiescent4 µA
Current - output high, low4mA, 4mA
Frequency46 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 CL25ns @ 5.5V, 50pF

Product details

Dual D-type with set/reset — 46 MHz, 5 V logic

The SN74HCT74DT is a dual positive-edge-triggered D-type flip-flop with set and reset inputs, complementary outputs, two elements, and a 46 MHz clock.

Supply and temperature — industrial-rated 5 V logic

Rated for -40°C to 85°C ambient, the SN74HCT74DT covers factory-floor enclosures, outdoor telecom cabinets, and engine-bay-adjacent electronics.

Lifecycle and sourcing

The SN74HCT74DT carries an Active lifecycle status, meaning TI continues to manufacture it with no announced last-time-buy. ROHS3 compliant.

Frequently asked questions

What is the difference between the SN74HCT74DT and the SN74HC74D?

Both are dual D-type flip-flops in 14-SOIC with the same pinout. The HCT variant (SN74HCT74DT) accepts TTL-level input voltages directly, while the HC variant (SN74HC74D) expects CMOS-level inputs. If your upstream logic is 5 V TTL (e.g., 74LS or 74ALS), the HCT version avoids a level-shifter.

What is the SN74HCT74DT's clock frequency and propagation delay?

Maximum clock frequency is 46 MHz. Maximum propagation delay is 25 ns at 5.5 V supply into a 50 pF load. These numbers define the timing closure window for synchronous designs.