SN74LS156DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LS156DG4 is a dual 2-line to 4-line decoder/demultiplexer in the 74LS logic family, housed in a 16-pin SOIC package. It provides open-collector outputs, supports operation as a 1-to-8 demultiplexer, and handles load capacitances up to 15 pF for standard TTL bus applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS156DG4 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 SN74LS156DG4?
- Dual 2-to-4 line decoder/demultiplexer in a single package
- Open-collector outputs for wired-OR bus configurations
- Usable as a single 1-to-8 demultiplexer
- 16-pin SOIC package with 1.27 mm pitch
- Load capacitance rating up to 15 pF
- Standard 74LS TTL logic family compatibility
- RoHS-compliant e4 lead-free construction
- Low output sink current (8 mA max) suitable for indicator loads
What is SN74LS156DG4 used for?
SN74LS156DG4 is commonly used in address decoding circuits for microprocessor and microcontroller bus systems, enabling up to 8 memory or peripheral chip-select lines from 3 address bits. It also serves as a data routing demultiplexer in digital logic boards, industrial programmable controllers, and legacy TTL-level backplane designs where open-collector outputs allow multiple devices to share a common output bus. Its compact 16-pin SOIC footprint is well-suited for densely populated logic boards.
What are the specifications of SN74LS156DG4?
| YTEOL | 0 |
| Additional Feature | USABLE AS 1 TO 8 DEMULTIPLEXER |
| Family | LS |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | 2-LINE TO 4-LINE DECODER |
| Max I(ol) | 0.008A |
| 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) | 10mA |
| Prop. Delay@Nom-Sup | 51ns |
| Propagation Delay (tpd) | 51ns |
| 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 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74LS156DG4 datasheet?
SN74LS156DG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS156DG4?
Compatible alternatives and drop-in replacements for SN74LS156DG4:
onsemi LS Series, Inverted Output, TTL, PDSO16
Texas Instruments LS Series, Inverted Output, TTL, PDSO16
Frequently Asked Questions
Which designs are a good fit for SN74LS156DG4 with 15 pF?
SN74LS156DG4 fits industrial, embedded, and repair-oriented electronic assemblies when the design needs 15 pF and 0.008 A. It is a practical choice when the BOM also matches the 16-pin SOIC footprint.
How should engineers check package compatibility for SN74LS156DG4?
Compare the PCB land pattern, height allowance, and assembly process against the 16-pin SOIC style. The 16 pins detail is the first check before approving a replacement.
What matters when sourcing SN74LS156DG4 as a replacement?
Confirm the same 15 pF, 0.008 A, manufacturer traceability, and lifecycle status before substituting it. Buyers should also verify stock for the exact 16-pin SOIC configuration.
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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.
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