SN74ALS156D Texas Instruments Integrated Circuit (Other) In Stock
The SN74ALS156D is a dual 2-line to 4-line decoder/demultiplexer from Texas Instruments in the ALS logic family. It features open-collector outputs with a maximum output low current of 8mA and operates in a 16-Pin SOIC package. Available from stock worldwide with fast shipping for digital logic design applications.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS156D 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
- Advanced Low-power Schottky (ALS) technology delivers high speed with reduced power consumption
- Dual decoder in single package with 8 total output bits for compact system designs
- Open-collector outputs with 8mA sink capability enable wired-AND bus configurations
- 50pF load capacitance rating supports reliable operation in high-capacitance PCB environments
Applications
The SN74ALS156D is used in digital systems requiring address decoding and signal demultiplexing, such as memory chip select logic and I/O port expansion. Its ALS technology makes it well-suited for high-speed bus interfaces where power efficiency is critical. It also finds use in industrial control systems and telecommunications equipment requiring reliable 1-of-4 output selection.
Specifications
| YTEOL | 0 |
| Family | ALS |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 2-LINE TO 4-LINE DECODER |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 9mA |
| Prop. Delay@Nom-Sup | 55ns |
| Propagation Delay (tpd) | 55ns |
| 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 (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ALS156D:
Texas Instruments ALS Series, Inverted Output, TTL, PDSO16
Frequently Asked Questions
What is the logic family of the SN74ALS156D?
The SN74ALS156D belongs to the Advanced Low-power Schottky (ALS) logic family, which offers a balance of high speed and low power consumption compared to standard TTL, making it ideal for battery-powered or thermally constrained designs.
What package does the SN74ALS156D use?
The SN74ALS156D is available in a 16-Pin SOIC (Small Outline Integrated Circuit) surface-mount package, identified by JESD-30 code R-PDSO-G16, which saves PCB space compared to through-hole PDIP alternatives.
What is the maximum output low current of the SN74ALS156D?
The SN74ALS156D has a maximum output low current (I_OL) of 8mA, which allows it to drive standard TTL and CMOS logic inputs directly, as well as support wired-AND configurations with open-collector outputs.
What are typical applications for the SN74ALS156D?
Typical applications include memory address decoding, chip enable logic for microprocessor systems, data routing in multiplexed bus architectures, and industrial automation control panels requiring reliable 2-to-4 line decoding.
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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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