SN74HCT74DTIn StockTexas Instruments
SN74HCT74DT is a dual D-type positive-edge-triggered flip-flop IC from Texas Instruments, operating at up to 22 MHz with HCT logic levels and 50 pF load capacitance. Available in a 14-pin SOIC package, it offers CMOS-compatible inputs and TTL-compatible outputs. From $0.22 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74HCT74DT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2199(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual D-type positive-edge-triggered flip-flop with independent clock, set, and reset inputs per element
- HCT logic family: CMOS-compatible inputs (1.35 V threshold) with TTL-compatible outputs, bridging legacy and modern logic
- Maximum operating frequency of 22 MHz at nominal supply, suitable for high-speed sequential logic designs
- Low output sink current spec (4 mA) in compact 14-pin SOIC package enabling easy PCB integration
- RoHS-compliant (Pb-free, e4 JEDEC-609) for compliance with environmental regulations
Applications
The SN74HCT74DT is widely used in digital sequential circuits such as registers, counters, and state machines in industrial control systems, consumer electronics, and communication equipment. Its HCT logic family makes it ideal for interfacing 3.3 V CMOS logic with 5 V TTL systems in mixed-voltage board designs. It is also commonly found in clock division, data synchronization, and edge-detection applications within embedded systems and programmable logic designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Family | HCT |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 22000000Hz |
| Max I(ol) | 0.004A |
| Number of Bits | 1 |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 35ns |
| Propagation Delay (tpd) | 35ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 24MHz |
| ## SN74HCT74DT Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HCT74DT:
Flip-Flop, HCT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, PDSO14
Flip-Flop, HCT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, PDSO14
Flip-Flop, HCT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, PDSO14
suggested
suggested
suggested
Frequently Asked Questions
What is the maximum operating frequency of the SN74HCT74DT?
The SN74HCT74DT supports a maximum clock frequency of 22 MHz at nominal supply voltage. This makes it suitable for high-speed sequential logic, clock division, and data synchronization tasks in digital circuit designs.
What package does the SN74HCT74DT come in and what are its dimensions?
The SN74HCT74DT is housed in a 14-pin SOIC (Small Outline Integrated Circuit) surface-mount package, identified by JESD-30 code R-PDSO-G14. This compact SMD package is well-suited for high-density PCB layouts in space-constrained applications.
Is the SN74HCT74DT RoHS compliant?
Yes, the SN74HCT74DT is fully RoHS compliant. It carries Pb-free status and JEDEC-609 code e4, confirming it meets international environmental standards for restriction of hazardous substances in electronic equipment.
What are typical applications for the SN74HCT74DT?
The SN74HCT74DT is commonly used in digital registers, binary counters, state machines, and edge-triggered latches. Its HCT logic family makes it especially useful for level-shifting between 3.3 V CMOS and 5 V TTL systems in mixed-voltage embedded designs.
Can the SN74HCT74DT replace 74HC74 devices?
Yes, the SN74HCT74DT is pin-compatible with 74HC74 devices but features HCT-series CMOS inputs designed to accept TTL-level signals. It is a direct drop-in replacement in applications where TTL-compatible input thresholds are required, offering the same dual flip-flop functionality.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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| 10+ | $0.7100 | $7.10 |
| 25+ | $0.6404 | $16.01 |
| 100+ | $0.5643 | $56.43 |
| 790+ | $0.2537 | $200.42 |
| 1020+ | $0.2453 | $250.21 |
| 1365+ | $0.2199 | $300.16 |
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