CD74HC175E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC175E is a high-speed CMOS quad D-type flip-flop with direct clear, operating from 2 V to 6 V and clocked at up to 20 MHz. It stores 4 bits of parallel data in a 16-pin PDIP package with 50 pF load capacitance and 5.2 mA output sink current. Available from Texas Instruments in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC175E 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
- Quad D-type flip-flop with synchronous clocking at up to 20 MHz for reliable high-speed data latching
- Direct asynchronous clear input allowing instant register reset independent of clock state
- 2 V to 6 V supply range for seamless integration in both 3.3 V and 5 V mixed-logic systems
- 5.2 mA maximum I_OL enabling direct drive of CMOS logic buses without external buffers
- 16-pin PDIP package ideal for breadboard prototyping and through-hole production designs
Applications
The CD74HC175E is used in parallel data registers, shift register input stages, and synchronous state-machine flip-flop banks in digital logic prototyping and production boards. Its quad D-type architecture with a common clock and clear enables straightforward 4-bit synchronized data capture in microprocessor bus interfaces and FPGA I/O expansion circuits. The through-hole PDIP package makes it a popular choice for educational projects, prototype testing, and legacy industrial equipment repair where surface-mount assembly is not available.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0052A |
| Number of Bits | 4 |
| Number of Functions | 4 |
| Output Polarity | COMPLEMENTARY |
| 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) | 0.08mA |
| Prop. Delay@Nom-Sup | 53ns |
| Propagation Delay (tpd) | 265ns |
| 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 |
| fmax-Min | 24MHz |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC175E:
D Flip-Flop, HC/UH Series, 4-Func, Positive Edge Triggered, 4-Bit, Complementary Output, CMOS, PDIP16
Frequently Asked Questions
What is the maximum clock frequency supported by the CD74HC175E at a 5 V supply?
The CD74HC175E supports a maximum clock frequency of 20 MHz at its nominal supply voltage. This makes it suitable for synchronous 4-bit data latching in logic designs running at standard TTL-compatible clock rates, including microprocessor bus interfaces and state machines operating below 20 MHz. At lower voltages such as 3.3 V, the maximum frequency is derated accordingly per the datasheet curves.
How does the direct clear function of the CD74HC175E improve system reset reliability?
The CD74HC175E includes an asynchronous active-low direct clear input that forces all 4 flip-flop outputs to logic 0 immediately, independent of the clock signal. This means the register can be reset within nanoseconds of asserting the clear line—no clock cycle is needed—which is essential for deterministic power-on reset sequences in 5 V digital control systems where a known initial state must be guaranteed.
For a breadboard prototype requiring a 4-bit data register, why choose the CD74HC175E PDIP package over the surface-mount variant?
The CD74HC175E in a 16-pin PDIP package plugs directly into standard 0.1-inch pitch breadboards and DIP sockets, eliminating the need for soldering or SMD adapters during prototyping. Its 2 V to 6 V range and 50 pF load capacitance rating support typical 5 V TTL-level breadboard wiring, and the through-hole leads provide robust mechanical connections that SMD 1.27 mm-pitch packages cannot match in hand-assembled setups.
Can the CD74HC175E replace a 74LS175 in an existing 5 V circuit without redesign?
Yes, the CD74HC175E is a pin-compatible replacement for the 74LS175 in 5 V designs. The HC family output swing and input thresholds are CMOS-level but are compatible with LS TTL driving conditions at 5 V. The HC variant draws significantly less quiescent current—typically under 80 µA versus several mA for LS—resulting in measurable power savings in battery-backed or always-on 5 V legacy boards.
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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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