SN74AS194NE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AS194NE4 is a 4-bit bidirectional universal shift register from Texas Instruments' AS logic family. It supports parallel-in/parallel-out operation, SIPO mode, and operates at up to 80 MHz with a 50pF load. Available in a 16-pin DIP package with RoHS compliance and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AS194NE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional shift capability with parallel load for versatile data manipulation in logic designs
- High-speed operation up to 80 MHz at 50pF load capacitance for demanding timing applications
- Supports SIPO operation in addition to parallel-in parallel-out for flexible interface configurations
- RoHS compliant lead-free design suitable for environmentally regulated end products
- 16-pin DIP through-hole package ideal for prototyping and breadboard-compatible designs
Applications
The SN74AS194NE4 is used in digital systems requiring fast, flexible data shifting and storage, including UART interfaces, serial-to-parallel converters, and arithmetic logic units. Its bidirectional operation makes it well suited for bus interface applications where data must flow in both directions. It is also commonly found in educational and prototyping environments due to its through-hole DIP packaging and classic 74-series compatibility.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | SIPO OPERATION ALSO AVAILABLE |
| Count Direction | BIDIRECTIONAL |
| Family | AS |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 80000000Hz |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 53mA |
| Propagation Delay (tpd) | 7ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 80MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74AS194NE4:
Parallel In Parallel Out, AS Series, 4-Bit, Bidirectional, True Output, TTL, PDIP16
Frequently Asked Questions
What is the maximum operating frequency of the SN74AS194NE4?
The SN74AS194NE4 operates at a maximum frequency of 80 MHz with a 50pF load capacitance, placing it in the high-speed AS (Advanced Schottky) logic family suitable for demanding digital timing applications.
What shift register modes does the SN74AS194NE4 support?
The SN74AS194NE4 supports bidirectional shifting and parallel-in/parallel-out (PIPO) operation, and it also offers SIPO (Serial-In Parallel-Out) functionality, giving designers flexible data routing options in a single device.
What package does the SN74AS194NE4 come in?
The SN74AS194NE4 is available in a 16-pin 0.300-inch DIP (R-PDIP-T16) through-hole package, which is compatible with standard breadboards and sockets, making it convenient for prototyping and educational use.
Is the SN74AS194NE4 RoHS compliant?
Yes, the SN74AS194NE4 is RoHS compliant and lead-free, as confirmed by its Pbfree Code of Yes and JESD-609 Code e4, making it appropriate for use in products subject to environmental regulations.
What logic family does the SN74AS194NE4 belong to?
The SN74AS194NE4 belongs to the AS (Advanced Schottky) logic family, which offers higher speed than standard TTL while maintaining compatibility with 74-series logic voltage levels and pinouts.
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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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