SN74ALS374ADWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ALS374ADWRG4 is an octal D-type edge-triggered flip-flop with 3-state outputs, operating up to 35 MHz with 24 mA IOL drive in a 20-pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS374ADWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ALS374ADWRG4?
- Octal (8-bit) D-type positive edge-triggered flip-flops enabling simultaneous 8-bit data latching in a single device
- 3-state outputs with active-low output enable for shared bus architectures and wired-OR configurations
- 35 MHz maximum clock frequency in ALS family providing fast data capture for address and data bus registers
- 50 pF load capacitance rating ensuring stable operation on heavily loaded PCB traces
- RoHS-compliant 20-pin SOIC package (JESD-30 R-PDSO-G20) for standard SMT assembly
What is SN74ALS374ADWRG4 used for?
The SN74ALS374ADWRG4 is used as an 8-bit data or address bus register in microprocessor and microcontroller systems, capturing parallel data on the rising clock edge and holding it stable for downstream logic. Its 3-state outputs allow multiple register devices to share a common output bus, making it suitable for memory address demultiplexing and I/O port expansion in embedded control boards. The ALS family speed and 5 V operation make it compatible with legacy TTL and CMOS bus systems requiring reliable 35 MHz register throughput.
What are the specifications of SN74ALS374ADWRG4?
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ALS |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max Frequency@Nom-Sup | 35000000Hz |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 31mA |
| Prop. Delay@Nom-Sup | 16ns |
| Propagation Delay (tpd) | 16ns |
| 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 | TTL |
| Temperature Grade | COMMERCIAL |
| 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 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74ALS374ADWRG4 datasheet?
SN74ALS374ADWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS374ADWRG4?
Compatible alternatives and drop-in replacements for SN74ALS374ADWRG4:
Frequently Asked Questions
What is the maximum clock frequency of the SN74ALS374ADWRG4 and what bus speeds does it support?
The SN74ALS374ADWRG4 operates at a maximum clock frequency of 35 MHz, making it suitable for 8-bit data and address bus registers in systems clocked up to 35 MHz. This covers most 8-bit and 16-bit microprocessor buses, including bus speeds common in industrial controllers, PLCs, and legacy embedded systems using 5 V TTL-compatible logic.
How do the 3-state outputs of the SN74ALS374ADWRG4 improve multi-device bus designs?
The active-low output enable (OE) pin places all 8 outputs into a high-impedance state, allowing multiple SN74ALS374ADWRG4 devices to share a single 8-bit bus without signal contention. Each device can drive the 24 mA bus lines when selected, while others remain tristated, enabling clean address or data multiplexing in memory-mapped I/O and backplane designs.
Which embedded control applications are best matched to the SN74ALS374ADWRG4 register specification?
Industrial PLCs, VME bus controllers, and 8051/Z80-era microprocessor boards are well matched because they operate at 5 V with bus clocks below 35 MHz and benefit from octal D-type registers with 3-state outputs. The 20-pin SOIC package fits standard SMT footprints, and the ALS logic family tolerates the wide temperature ranges common in industrial environments from -40°C to 85°C.
Is SN74ALS374ADWRG4 interchangeable with SN74AHCT374 or SN74HC374 in existing designs?
Functionally the SN74ALS374ADWRG4 is pin-compatible with SN74AHCT374 and SN74HC374 in the same 20-pin SOIC footprint, but speed and drive strength differ: ALS offers 35 MHz at 24 mA IOL versus HC's 25 MHz at 4 mA. Substituting requires verifying supply voltage (ALS is 5 V only) and confirming that the reduced 24 mA drive still meets the target bus load of 50 pF or less.
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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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