SN74LS74ADIn StockTexas Instruments
SN74LS74AD is a dual D-type positive-edge-triggered flip-flop IC from Texas Instruments, featuring preset and clear inputs, 25 MHz max frequency, and 14-pin SOIC package. From $0.26 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS74AD Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2625(MOQ 1)
- Temp Range
- ?°C to 70.0°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 preset and clear inputs
- 25 MHz maximum clock frequency for reliable high-speed digital logic applications
- Low-power LS-family TTL logic with 8 mA output sink current
- 14-pin Small Outline SOIC package for compact PCB designs
- Operates from standard 5V TTL supply voltage
Applications
The SN74LS74AD is widely used in digital logic design for frequency division, data synchronization, and shift register implementations. It is commonly found in microprocessor-based systems, programmable logic controllers, and communication equipment where reliable edge-triggered latching is required. Its dual configuration allows designers to implement toggle flip-flops, binary counters, and pipeline stages within a single compact package.
Specifications
| YTEOL | 0 |
| Family | LS |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 25000000Hz |
| Max I(ol) | 0.008A |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 8mA |
| Prop. Delay@Nom-Sup | 40ns |
| Propagation Delay (tpd) | 40ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 35MHz |
| 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 SN74LS74AD:
D Flip-Flop, LS Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, TTL, PDSO14
D Flip-Flop, LS Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, TTL, PDSO14
D Flip-Flop, LS Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, TTL, PDSO14
Frequently Asked Questions
What is the maximum operating frequency of the SN74LS74AD?
The SN74LS74AD supports a maximum clock frequency of 25 MHz (25,000,000 Hz) at nominal supply voltage. This makes it suitable for high-speed digital logic applications such as frequency dividers, counters, and data latching circuits operating within standard TTL speed requirements.
What package type does the SN74LS74AD use, and what are its pin count?
The SN74LS74AD comes in a 14-pin Small Outline Integrated Circuit (SOIC) package, designated by the JESD-30 code R-PDSO-G14. The compact surface-mount package is ideal for space-constrained PCB designs and is compatible with standard SOIC footprints.
What are the typical applications of the SN74LS74AD?
The SN74LS74AD is commonly used in digital systems for data synchronization, binary counters, frequency division by two, shift registers, and pipeline storage. It is found in microprocessor support circuits, industrial controllers, and communication hardware requiring reliable edge-triggered D flip-flop functionality.
Is the SN74LS74AD RoHS compliant?
Yes, the SN74LS74AD carries the JESD-609 code e4, which indicates that the device is lead-free and RoHS compliant. This makes it suitable for use in environmentally regulated products and modern electronics manufacturing processes.
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Why Buy from FindMyChip
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5250 | $0.53 |
| 11+ | $0.4200 | $4.62 |
| 15+ | $0.4050 | $6.08 |
| 49+ | $0.2625 | $12.86 |
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