CD54HC564F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
CD54HC564F3A is an 8-bit D-type positive-edge-triggered flip-flop register with 3-state outputs designed for bus interface applications. It operates in the HC/UH logic family at up to 20 MHz clock frequency with 50 pF load capacitance in a 20-pin ceramic DIP package. Provides active-low output enable control for high-impedance bus driving in MIL-spec and high-reliability designs.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC564F3A Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $42.4500(MOQ 1)
- 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 CD54HC564F3A?
- 8-bit positive-edge D flip-flop with 3-state outputs enabling shared bus architectures
- 20 MHz maximum clock frequency in HC/UH family for reliable digital data latching
- 20-pin ceramic DIP (CDIP) package suited for military-grade and high-reliability environments
What is CD54HC564F3A used for?
The CD54HC564F3A is designed for bus interface and data storage applications in military-grade and high-reliability digital systems such as aerospace avionics, defense electronics, and industrial control hardware. Its 3-state output and active-low enable pin allow multiple devices to share a common 8-bit data bus without conflict. The ceramic DIP package ensures stable operation across extended temperature ranges in environments where plastic packages may fail.
What are the specifications of CD54HC564F3A?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T20 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0078A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 43ns |
| Propagation Delay (tpd) | 250ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| 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 |
| Trigger Type | POSITIVE EDGE |
| 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 CD54HC564F3A datasheet?
CD54HC564F3A Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD54HC564F3A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 3-state output of the CD54HC564F3A enable multiple registers to share a common 8-bit data bus?
When the active-low output enable pin is deasserted high, all 8 output drivers enter high-impedance state, electrically disconnecting the register from the bus and allowing another device to drive the 8-bit lines without contention. Only one device asserts its enable low at a time, and the HC-family outputs can drive 50 pF bus loads at up to 20 MHz, supporting typical backplane bus speeds in embedded military systems.
For aerospace avionics running across a wide temperature range, why is the ceramic DIP package of the CD54HC564F3A preferred over plastic SOIC?
Ceramic dual-in-line packages (CDIP) provide hermetic sealing that prevents moisture ingress and internal corrosion, maintaining electrical parameters over temperature ranges from -55°C to +125°C or beyond where plastic packages experience delamination and parametric drift. Military and space-grade systems use ceramic packages to meet MIL-PRF-38535 or equivalent qualification standards that plastic SMD parts cannot satisfy.
At 20 MHz clock frequency, how does the CD54HC564F3A compare in speed to standard LS-TTL bus registers of the same bit width?
The HC/UH family CD54HC564F3A operates at 20 MHz with propagation delay typically under 25 ns at 5V, comparable to 74LS374 at 25 MHz but with significantly lower quiescent power draw — HC devices consume under 80 µA static versus several milliamps for LS-TTL. In battery-backed military ground equipment, this power reduction extends runtime without sacrificing clocking speed for standard 8-bit bus transfers.
How does the positive-edge-triggered clocking of the CD54HC564F3A differ from a latch-based bus register, and which application scenarios favor each?
Positive-edge triggering samples all 8 data inputs simultaneously at the rising clock edge, providing deterministic setup and hold timing of typically 5 ns to 20 ns at 5V, making it immune to input glitches between clock edges. A transparent latch passes data continuously when enabled, which is preferable for asynchronous data capture but risks latching noise; edge-triggered flip-flops are preferred in synchronous digital pipelines and microprocessor bus demultiplexing where clock-domain integrity is critical.
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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 |
|---|---|---|
| 1+ | $43.6700 | $43.67 |
| 10+ | $42.8800 | $428.80 |
| 25+ | $42.4500 | $1061.25 |
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