SN74S157NSRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74S157NSRE4 is a quad 2-input multiplexer IC from TI's S (Schottky TTL) logic family, providing four independent 2-to-1 data selection channels with a common select input. It features 15pF load capacitance and 20mA output sink current in a 16-pin SOP package. Available from stock with worldwide shipping at competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74S157NSRE4 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
- Quad 4-channel 2-to-1 multiplexer with a single shared SELECT input enables simultaneous selection of 4-bit wide parallel data words
- Schottky TTL (S family) technology delivers fast propagation delays with high output drive capability of 20mA IOL
- Low 15pF load capacitance reduces signal distortion and enables high-speed data switching in multiplexed bus architectures
- 16-pin SOIC package integrates four complete MUX channels, optimizing board density for data routing and signal selection circuits
Applications
The SN74S157NSRE4 is used in data routing and bus multiplexing applications where one of two 4-bit data buses must be selected and forwarded to a common output bus. It is commonly deployed in address multiplexing for DRAM interfaces, input switching for arithmetic logic units, and signal path selection in communication and test equipment. The Schottky TTL family's fast switching speed makes it suitable for high-speed parallel data processing systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Family | S |
| JESD-30 Code | R-PDSO-G16 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.02A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Number of Outputs | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 78mA |
| Prop. Delay@Nom-Sup | 7.5ns |
| Propagation Delay (tpd) | 7.5ns |
| 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 Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| 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 SN74S157NSRE4:
Multiplexer, S Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16
Multiplexer, S Series, 4-Func, 2 Line Input, 1 Line Output, True Output, TTL, PDSO16
Frequently Asked Questions
What is the SN74S157NSRE4 and how does it function?
The SN74S157NSRE4 is a quad 2-to-1 multiplexer IC containing four independent single-bit 2-input multiplexer channels. A single SELECT input simultaneously controls all four channels, routing either the A or B input data group to the four outputs, allowing selection between two 4-bit wide data buses.
What logic family does the SN74S157NSRE4 belong to and what are its speed characteristics?
The SN74S157NSRE4 belongs to the S (Schottky TTL) logic family, which uses Schottky-clamped transistors to prevent saturation and achieve fast switching speeds. The S family offers propagation delays in the low nanosecond range with TTL-compatible input and output voltage levels, suitable for high-speed digital data routing applications.
What is the output drive capability of the SN74S157NSRE4?
The SN74S157NSRE4 has a maximum output low current (IOL) of 20mA, enabling it to directly drive standard TTL loads and bus lines. Combined with its Schottky TTL output structure, this current drive capability ensures reliable logic level transmission even with moderate capacitive loading on the output lines.
What package does the SN74S157NSRE4 use?
The SN74S157NSRE4 is housed in a 16-pin Small Outline Package (SOP), designated JESD-30 code R-PDSO-G16. This surface-mount package is compatible with standard 16-pin SOIC footprints widely used in PCB assembly, and the 'SRE4' suffix indicates tape-and-reel packaging on 7-inch reels for automated SMT production.
Is the SN74S157NSRE4 RoHS compliant?
Yes, the SN74S157NSRE4 is RoHS compliant as indicated by its Pbfree code designation. The device is manufactured using a lead-free process meeting current environmental regulations, making it suitable for use in consumer, industrial, and commercial electronics products requiring environmental compliance certification.
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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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