CD74HC237E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74HC237E is a High-Speed CMOS 3-to-8 line decoder/demultiplexer with address latches from Texas Instruments, operating on a 2 V to 6 V supply. It decodes 3 binary inputs to activate 1 of 8 outputs and includes integrated address latching for bus-hold applications. Available in a 16-pin DIP package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC237E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5986(MOQ 10)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC237E?
- 3-to-8 line decoding with integrated address latches for bus-hold and multiplexed address lines
- High-speed CMOS HC family with typical propagation delay of 7 ns at 5 V supply
- Wide supply voltage range of 2 V to 6 V compatible with TTL and CMOS logic levels
- 16-pin DIP package simplifies prototyping and through-hole assembly on standard PCBs
What is CD74HC237E used for?
CD74HC237E is widely used in memory address decoding systems where a microprocessor selects one of 8 memory banks or peripheral devices using a 3-bit address bus. The integrated address latches make it suitable for multiplexed bus architectures where addresses must be captured and held while data transfers proceed. It also serves in industrial control panels and embedded systems as a line-driver selector for up to 8 output channels.
What are the specifications of CD74HC237E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| Input Conditioning | LATCHED |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| 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 | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| 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 | 36ns |
| Propagation Delay (tpd) | 240ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Where can I find the CD74HC237E datasheet?
CD74HC237E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC237E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many output lines can CD74HC237E activate, and what supply voltage does it require?
CD74HC237E can activate 1 of 8 output lines based on a 3-bit binary address input. It operates from a supply voltage ranging from 2 V to 6 V, making it compatible with both 3.3 V and 5 V logic systems. The 16-pin DIP package simplifies integration into through-hole designs used in memory decoding and peripheral selection circuits.
What advantage do the integrated address latches in CD74HC237E provide in multiplexed bus designs?
The latched address inputs in CD74HC237E allow the device to capture and hold a 3-bit address from a multiplexed bus while the address lines transition to carry data. This removes the need for external latch ICs, saving board space and component count in 8-output demultiplexer designs. The latched configuration is particularly useful in microcontroller systems running at bus speeds where address setup times can be as short as 5 ns.
In what scenarios would CD74HC237E be preferred over a non-latching 74HC138 decoder?
CD74HC237E is preferred over the 74HC138 when the system uses a multiplexed address/data bus, because the built-in latches capture the 3-bit address on a strobe edge and hold it stable across subsequent bus cycles. This avoids address glitches during data phases and reduces external component count by eliminating a separate 8-bit latch. For static address buses with dedicated address lines, the 74HC138 is a simpler 16-pin alternative with similar 7 ns propagation delay.
What load capacitance specification should designers consider when using CD74HC237E at high bus speeds?
CD74HC237E is rated for a load capacitance of 50 pF per output pin, which defines the switching speed at its typical 7 ns propagation delay at 5 V. Exceeding 50 pF per output line increases propagation delay and can cause timing violations in systems running above 50 MHz. Designers should limit PCB trace lengths and avoid multiple parallel loads on each output to stay within the 50 pF specification.
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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
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.7994 | $7.99 |
| 250+ | $0.7860 | $196.50 |
| 1000+ | $0.6680 | $668.00 |
| 100000+ | $0.5986 | $59860.00 |
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