CD74HC574E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
High Speed CMOS Logic Octal Positive-Edge-Triggered D-Type Flip-Flops with 3-State Outputs, featuring 8-bit storage with tri-state outputs, 20-pin DIP package, 50pF load capacitance. From $0.15, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC574E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1526(MOQ 1)
- 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 positive-edge-triggered D-type flip-flops with individual 3-state outputs for efficient bus interfacing
- High-speed CMOS HC/UH family with low power consumption and wide supply voltage range (2V to 6V)
- Output enable (active-low) control for easy bus sharing and multiplexing in digital systems
- Broadside version of 374 with 20-pin DIP package, compatible with standard TTL logic levels
- 50pF load capacitance support with unidirectional count direction for reliable data latching
Applications
The CD74HC574E is widely used in microprocessor-based systems for address/data bus buffering, register files, and I/O port expansion. Its 3-state outputs make it ideal for shared bus architectures in PLCs, memory interface circuits, and industrial control boards. The device also serves well in data acquisition systems, FPGA peripheral interfacing, and any application requiring synchronized 8-bit data storage with bus isolation.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | BROADSIDE VERSION OF 374 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T20 |
| 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 | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 50ns |
| 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 | 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 |
| Trigger Type | POSITIVE EDGE |
| ## CD74HC574E Alternates Showing results | Image |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC574E:
suggested
Frequently Asked Questions
What is the operating voltage range of the CD74HC574E?
The CD74HC574E operates over a supply voltage range of 2V to 6V, making it compatible with both 3.3V and 5V digital systems. At 5V, it delivers typical propagation delays of around 8ns, enabling high-speed data latching in time-critical designs.
How does the 3-state output work on the CD74HC574E?
The CD74HC574E features an active-low Output Enable (OE) pin that controls all 8 output lines simultaneously. When OE is high, all outputs enter a high-impedance state, allowing multiple devices to share a common data bus without signal conflict.
What are common applications for the CD74HC574E?
Common applications include microprocessor bus buffering, I/O port latching, address/data demultiplexing, and memory interface circuits. Its 8-bit parallel storage and tri-state capability make it a standard choice in PLCs, embedded systems, and FPGA peripheral boards.
Is the CD74HC574E compatible with TTL logic levels?
Yes, the CD74HC574E is fully TTL-compatible when operated at 5V. It accepts TTL-level inputs and provides CMOS-level outputs, making it suitable for mixed TTL/CMOS system designs. The device also supports 3.3V logic when powered from a 3.3V supply.
What is the difference between CD74HC574E and CD74HC374E?
The CD74HC574E is the broadside version of the CD74HC374E. Both are octal D-type flip-flops with 3-state outputs, but they differ in pinout layout. The 574 arranges inputs and outputs on opposite sides of the package, which simplifies PCB routing in bus-oriented designs compared to the 374.
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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 |
|---|---|---|
| 1+ | $0.3270 | $0.33 |
| 74+ | $0.2180 | $16.13 |
| 276+ | $0.1526 | $42.12 |
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