SN74AHCT138PWE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AHCT138PWE4 is a 3-line to 8-line decoder/demultiplexer from Texas Instruments in the AHCT logic family. It features 3 enable inputs, 50 pF load capacitance, and 8 mA output current capability. Available in 16-pin TSSOP package, from $0.30 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHCT138PWE4 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
What are the key features of SN74AHCT138PWE4?
- 3-line to 8-line decoding with 3 enable inputs for flexible chip select and memory bank switching
- AHCT logic family for TTL-compatible inputs and CMOS-level outputs
- High-speed switching with 50 pF load capacitance for demanding digital systems
- Active-low outputs enable direct drive of memory, I/O ports, and peripheral devices
What is SN74AHCT138PWE4 used for?
The SN74AHCT138PWE4 is commonly used in address decoding for microprocessor and microcontroller systems, enabling memory bank selection and I/O port expansion. It serves in data routing, demultiplexing applications, and priority encoder circuits in digital logic designs. The device is also widely deployed in industrial automation, communications equipment, and embedded systems requiring reliable 3-to-8 line decoding.
What are the specifications of SN74AHCT138PWE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | 3 ENABLE INPUTS |
| Family | AHCT/VHCT/VT |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 3-LINE TO 8-LINE DECODER |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 12ns |
| Propagation Delay (tpd) | 13ns |
| 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 | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
| Country of Origin | Malaysia |
Where can I find the SN74AHCT138PWE4 datasheet?
SN74AHCT138PWE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74AHCT138PWE4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many enable inputs does the SN74AHCT138PWE4 have?
The SN74AHCT138PWE4 features 3 enable inputs (two active-low and one active-high), providing flexible control for chip selection, enabling the decoder only when all enable conditions are satisfied, which simplifies complex bus architectures.
What logic family does the SN74AHCT138PWE4 belong to?
The SN74AHCT138PWE4 belongs to the AHCT (Advanced High-Speed CMOS with TTL-compatible inputs) logic family, offering TTL-compatible input thresholds while providing CMOS power consumption characteristics suitable for mixed-logic systems.
What package is the SN74AHCT138PWE4 available in?
The SN74AHCT138PWE4 is available in a 16-pin TSSOP (JESD-30 Code: R-PDSO-G16), a compact surface-mount package ideal for high-density PCB designs in space-constrained applications such as embedded systems and communication hardware.
What are the typical applications for the SN74AHCT138PWE4?
The SN74AHCT138PWE4 is used in address decoding for memory and I/O systems, data demultiplexing, chip-select generation, interrupt controllers, and any digital system requiring one-of-eight selection logic with enable control.
Is the SN74AHCT138PWE4 RoHS compliant?
Yes, the SN74AHCT138PWE4 is RoHS compliant with Pb-free designation (JESD-609 Code: e4), meeting environmental regulations for restricted hazardous substances and making it suitable for use in eco-friendly and compliant electronic products globally.
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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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