SN74AHC138PWR-P Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AHC138PWR-P is a 3-to-8 line decoder/demultiplexer IC by Texas Instruments, featuring active-low outputs, three enable inputs, and operation from 2 V to 5.5 V supply. Ideal for address decoding and data routing in logic systems. Available in TSSOP-16 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74AHC138PWR-P Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74AHC138PWR-P?
- 3-to-8 line decoding with active-low outputs for address and data bus demultiplexing
- Wide supply voltage range of 2 V to 5.5 V for mixed-voltage system compatibility
- Three enable inputs (two active-low, one active-high) enabling cascading and system-level control
- High-speed AHC logic family with propagation delays as low as 8.3 ns at 3.3 V
What is SN74AHC138PWR-P used for?
The SN74AHC138PWR-P is used in digital systems for address decoding, enabling CPUs or FPGAs to select one of up to 8 peripheral devices or memory banks. It also serves as a data demultiplexer in communication and signal routing circuits. Its cascadable enable inputs make it suitable for multi-level decoding trees in embedded and industrial control systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74AHC138PWR-P datasheet?
SN74AHC138PWR-P Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74AHC138PWR-P?
Compatible alternatives and drop-in replacements for SN74AHC138PWR-P:
Frequently Asked Questions
What supply voltage range does the SN74AHC138PWR-P support?
The SN74AHC138PWR-P operates over a supply voltage range of 2 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. This wide range supports mixed-voltage designs in embedded, industrial, and consumer electronics applications.
How fast is the SN74AHC138PWR-P, and what propagation delay can I expect?
The SN74AHC138PWR-P achieves typical propagation delays as low as 8.3 ns at 3.3 V, which is well-suited for high-speed address decoding in microprocessor and FPGA-based systems. This speed advantage comes from the AHC (Advanced High-Speed CMOS) logic family, which outperforms standard HC devices.
Can the SN74AHC138PWR-P be cascaded to decode more than 8 output lines?
Yes, the SN74AHC138PWR-P includes 3 enable inputs (E1 active-low, E2 active-low, and E3 active-high), allowing multiple devices to be cascaded for decoding up to 16, 32, or more output lines. Two devices in cascade can expand to a 4-to-16 decoder covering 16 outputs, ideal for large memory banking systems.
What package does the SN74AHC138PWR-P use, and how does it affect PCB design?
The SN74AHC138PWR-P is housed in a TSSOP-16 package with a 0.65 mm pin pitch, occupying a compact footprint of approximately 5 mm x 4.4 mm on the PCB. This small package minimizes board area usage and is suitable for high-density digital logic designs in space-constrained applications.
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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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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