SN74HC158DTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74HC158DTG4 is a quad 2-to-1 data selector and multiplexer in the HC logic family, operating from 2 V to 6 V supply. It provides four independent multiplexer channels with inverted outputs and a common active-low strobe. Packaged in 16-pin SOIC, it suits data routing, bus switching, and logic signal selection in high-speed digital designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74HC158DTG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-to-1 multiplexer with 4 independent selection channels
- HC CMOS logic family supporting 2 V to 6 V supply range
- Active-low strobe disables all outputs simultaneously for bus control
- Inverted outputs compatible with negative-logic signal routing
- 7.8 mA output sink current per channel at 50 pF load
- 16-pin SOIC package for compact surface-mount assembly
Applications
The SN74HC158DTG4 is used in digital systems for data path selection, routing signals between multiple sources to a single bus or processor input. Its quad-channel architecture makes it efficient for 4-bit parallel data multiplexing in memory address decoding and FPGA interface expansion. The device also finds application in test equipment and programmable logic controllers where signal switching and routing at 2 V to 6 V is required.
Specifications
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | MULTIPLEXER |
| Max I(ol) | 0.0078A |
| Number of Bits | 2 |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Number of Outputs | 1 |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 235ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| 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 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC158DTG4:
Multiplexer, HC/UH Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16
Multiplexer, HC/UH Series, 4-Func, 2 Line Input, 1 Line Output, Inverted Output, CMOS, PDSO16
Multiplexer, HC Series, 4-Func, 2 Line Input, 1 Line Output, True Output, CMOS, PDSO16
Frequently Asked Questions
How many independent data channels does the SN74HC158DTG4 provide, and what is its logical function?
The SN74HC158DTG4 integrates 4 independent 2-to-1 multiplexer channels, each selecting between two input data lines based on a shared select pin. The outputs are inverted, and a common active-low strobe forces all outputs to logic high when deasserted. This makes it suitable for 4-bit wide bus switching and data routing in CMOS digital logic systems.
Over what supply voltage range can this multiplexer operate, and how does that affect interfacing with 3.3 V and 5 V logic systems?
The device operates from 2 V to 6 V, covering both 3.3 V and 5 V logic supply rails without level-shifting circuitry. Input logic thresholds scale with supply voltage following HC-family specifications, so at 3.3 V VCC the typical input high threshold is approximately 2.3 V, ensuring reliable interfacing with standard CMOS and TTL-compatible outputs.
For a digital design requiring bus arbitration, how does the strobe pin help prevent bus contention?
The active-low strobe pin disables all 4 output channels simultaneously when pulled high, forcing the inverted outputs to logic high regardless of select or data inputs. This allows the device to be tri-stated at the system level, preventing bus contention when multiple drivers share a 4-bit data bus with 50 pF total load capacitance per line.
What output drive current does this device provide, and is it sufficient for driving standard logic loads?
Each output can sink up to 7.8 mA at the maximum IOL specification, which is adequate for driving standard CMOS logic inputs or short PCB traces. At a load capacitance of 50 pF, the HC-family propagation delay is typically under 10 ns at 5 V supply, making it suitable for moderate-speed digital bus switching applications.
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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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