CD54HC243F Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
Texas Instruments CD54HC243F is a quad bidirectional bus transceiver with 3-state outputs and independent direction control, rated -55°C to 125°C in a 14-pin ceramic DIP package. Available with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC243F Datasheet PDF
- Category
- Integrated Circuit
- 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 CD54HC243F?
- Quad bidirectional bus transceiver with independent output-enable control for each direction, allowing flexible half-duplex bus sharing
- HC/UH family CMOS logic operates from 2 V to 6 V supply with 50 pF load capacitance rating for robust bus driving
- Military-grade ceramic DIP-14 package rated from -55°C to 125°C for harsh environment aerospace and defense applications
What is CD54HC243F used for?
The CD54HC243F is used in aerospace, defense, and industrial systems where bidirectional data bus buffering must operate reliably across the full -55°C to 125°C military temperature range. Its independent direction control per channel makes it suitable for multi-master bus architectures in ruggedized avionics and test equipment.
What are the specifications of CD54HC243F?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.0078A |
| Number of Bits | 4 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 20ns |
| Propagation Delay (tpd) | 135ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| 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 | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the CD54HC243F datasheet?
CD54HC243F Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD54HC243F?
Compatible alternatives and drop-in replacements for CD54HC243F:
Bus Transceiver, HC/UH Series, 4-Func, 4-Bit, True Output, CMOS, CDIP14
Frequently Asked Questions
What temperature range does the CD54HC243F support and which environments does that enable?
The CD54HC243F is rated for operation from -55°C to 125°C, covering the full military temperature range. This makes it suitable for avionics, space-qualified boards, and military ground vehicles where commercial-grade parts rated to only 85°C would fail under extreme thermal cycling.
How many transceiver channels does the CD54HC243F provide and how is direction controlled?
The CD54HC243F integrates 4 bidirectional transceiver channels, each with an independent output-enable pin that controls direction. This independent control allows the host system to individually gate each channel, supporting complex bus-sharing schemes without additional discrete logic.
What supply voltage range does the CD54HC243F accept and what load capacitance is it specified for?
The CD54HC243F operates from a 2 V to 6 V supply, covering both 3.3 V and 5 V logic families. It is characterized with a load capacitance of 50 pF per channel, ensuring reliable drive strength on backplane and PCB traces typical of VME and CPCI board designs.
Why might a designer choose the CD54HC243F over a plastic-packaged equivalent for a long-service avionics program?
The ceramic DIP-14 package of the CD54HC243F provides hermetic sealing and moisture resistance far superior to plastic packages, extending service life in humid or sealed enclosures. Combined with the -55°C to 125°C temperature rating, it meets MIL-STD-883 screening requirements needed for 20+ year avionics platform commitments.
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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.
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