CD74HC564M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74HC564M is an octal positive-edge-triggered inverting D-type flip-flop with 3-state outputs from Texas Instruments in the high-speed CMOS HC family. It features active-low output enable control and handles 50pF load capacitance, housed in a 20-pin SOIC package. Lead-free, RoHS-compliant, and available globally.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC564M 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
Key Features
- Octal (8-bit) inverting D-type flip-flop with 3-state outputs for direct connection to shared bidirectional data buses
- Positive-edge-triggered clocking with active-low output enable for precise synchronous data capture and bus drive control
- High-speed CMOS (HC) family supports 2V to 6V operation with very low quiescent power and broad supply compatibility
- Broadside pinout (inputs and outputs on opposite sides) simplifies PCB routing in bus-driver and register applications
Applications
The CD74HC564M is used as a bus driver and register in microprocessor, microcontroller, and FPGA interface circuits where 8-bit data must be latched and driven onto a shared 3-state bus. Its inverting output characteristic makes it suitable for memory address latches and data bus buffers in systems where signal inversion is required by the bus protocol. The device is also applicable in industrial control logic, display drivers, and output port expanders where synchronized 8-bit data output with 3-state control is needed.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | BROADSIDE VERSION OF 534 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| 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 | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 41ns |
| Propagation Delay (tpd) | 250ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC564M:
Frequently Asked Questions
What is the CD74HC564M and how does it differ from a non-inverting flip-flop?
The CD74HC564M is an octal positive-edge-triggered D-type flip-flop with inverting outputs and 3-state drive capability from Texas Instruments. Unlike non-inverting variants such as the CD74HC574, the CD74HC564M presents the complement of the stored data on its Q outputs. The 3-state outputs allow the device to be disconnected from the bus when not active, enabling multiple devices to share a common data line.
What are the key electrical specifications of the CD74HC564M?
The CD74HC564M operates from 2V to 6V supply voltage and belongs to the HC/UH logic family. It features a load capacitance rating of 50pF per output, active-low output enable (OE) control, positive-edge clocking, and is packaged in a 20-pin SOIC (JESD-30 code R-PDSO-G20). It carries JESD-609 e4 lead-free compliance and Pbfree code Yes, confirming RoHS compliance.
What does the broadside version designation mean for the CD74HC564M?
The CD74HC564M is described as the broadside version of the CD74HC534. Broadside pinout means the data inputs (D) are located on one side of the package and the outputs (Q) on the opposite side, unlike the bus-oriented (or flow-through) pinout where inputs and outputs are interleaved. Broadside pinout simplifies PCB layout when data flows from one bus to another across the IC, reducing trace crossovers.
What applications is the CD74HC564M suited for?
The CD74HC564M is suited for microprocessor data bus latching, memory address registers, output port expanders, and any application requiring synchronous 8-bit data storage with 3-state bus drive and signal inversion. It is used in embedded system designs, industrial PLCs, display driver interfaces, and FPGA I/O expansion boards where parallel 8-bit data must be registered, inverted, and gated onto a shared bus under output enable control.
What are common alternatives or related devices to the CD74HC564M?
Common related devices include the CD74HC574M (non-inverting version with same pinout), CD74HC534M (inverting with bus-oriented pinout), and CD74HCT564 (TTL-compatible input version). The SN74HC564 from Texas Instruments is functionally equivalent. When replacing the CD74HC564M, verify the output polarity (inverting vs. non-inverting), pinout style (broadside vs. bus-oriented), and supply voltage range to ensure full compatibility with your design.
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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.
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