CD54HC138F Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
CD54HC138F is a high-speed CMOS 3-to-8 line decoder/demultiplexer with 3 enable inputs and 8 active-low outputs in a 16-pin ceramic DIP package. Operates up to 50 pF load capacitance with the HC/UH logic family for reliable decoding. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC138F Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.2600(MOQ 19)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3-to-8 line decoding with 2 active-low and 1 active-high enable inputs for flexible chip-select control
- High-speed CMOS HC/UH family supporting 50 pF load capacitance and fast propagation times
- Hermetically sealed 16-pin ceramic DIP package for military and high-reliability system designs
Applications
CD54HC138F is widely used in address decoding applications for memory systems, microprocessor chip-select generation, and data demultiplexing in embedded control systems. Its three enable inputs allow cascading multiple decoders to expand output lines beyond 8 channels. The ceramic package makes it suitable for avionics, military, and industrial applications requiring operation across extended temperature ranges.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Not Compliant |
| YTEOL | 15 |
| Additional Feature | TWO ACTIVE LOW AND ONE ACTIVE HIGH ENABLE INPUTS |
| Family | HC/UH |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 3-LINE TO 8-LINE DECODER |
| Max I(ol) | 0.0052A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | INVERTED |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 225ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD54HC138F:
Frequently Asked Questions
How does CD54HC138F handle enable control for memory chip-select applications?
CD54HC138F features 2 active-low enable inputs (E1, E2) and 1 active-high enable input (E3), all of which must be satisfied simultaneously to activate the 8 decoded outputs, providing flexible chip-select and address decoding control in 8-output memory and I/O expansion systems.
What load capacitance does CD54HC138F support and how does this affect timing?
CD54HC138F is rated for a load capacitance of 50 pF on its outputs, a standard condition for the HC/UH logic family that defines its propagation delay specifications, ensuring predictable timing in digital decoding circuits running at typical supply voltages.
When should CD54HC138F ceramic DIP be chosen over plastic DIP variants for industrial systems?
The ceramic CDIP (GDIP-T16) package of CD54HC138F is selected for applications demanding operation from -55°C to +125°C, high humidity resistance, and hermetic sealing, making it preferable over plastic versions in military avionics, defense electronics, and harsh industrial environments.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $16.0400 | $304.76 |
| 25+ | $15.3700 | $384.25 |
| 500+ | $11.5500 | $5775.00 |
| 1000+ | $10.9100 | $10910.00 |
| 10000+ | $10.2600 | $102600.00 |
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