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Texas Instruments CD74HC175EE4
- Part No.:
- CD74HC175EE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
CD74HC175EE4.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
CD74HC175EE4 from Texas Instruments is a high-speed CMOS quad D-type flip-flop with asynchronous master reset, operating from 2V to 6V, featuring complementary Q/Q̅ outputs per stage, positive-edge clock triggering, and guaranteed operation across –55°C to +125°C for aerospace and industrial control logic. It drives up to 10 LSTTL loads and delivers 35 MHz maximum clock frequency at 6V.
For engineers reviewing the CD74HC175EE4 datasheet, CD74HC175EE4 pinout, CD74HC175EE4 application, or CD74HC175EE4 equivalent, this device serves as a temperature-hardened, low-power sequential building block for state-holding, data latching, and synchronous register design in legacy TTL-compatible digital systems requiring deterministic edge-triggered behavior and rail-to-rail noise immunity.
Technical Context
The CD74HC175EE4 implements four independent D-type flip-flops sharing one common clock (CP) and one active-low asynchronous master reset (MR), enabling simultaneous initialization of all Q outputs to logic 0 and Q̅ outputs to logic 1 regardless of clock state. Its silicon-gate CMOS process ensures low static current (≤160 µA over full temperature range) and high noise immunity (NIL/NIH = 30% of VCC at 5V).
Each flip-flop transfers the D-input value to Q and Q̅ on the rising edge of CP; setup time is 14 ns (min) at 6V, hold time is 5 ns (max), and propagation delay from CP to Q is 30 ns (typ) at 6V with 50 pF load - parameters fully characterized across –55°C to +125°C for mission-critical timing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), pin- and function-compatible with LS-TTL but with CMOS power efficiency |
| Supply Voltage Range | 2V to 6V - supports mixed-voltage system interfacing and battery-backed operation down to 2V |
| Operating Temperature | –55°C to +125°C - qualified for military, automotive under-hood, and industrial embedded environments |
| Max Clock Frequency | 35 MHz at 6V - enables reliable high-speed data capture in real-time control loops |
| Output Drive Capability | 10 LSTTL loads - sufficient to directly drive legacy TTL bus loads without buffers |
| Propagation Delay (CP→Q) | 30 ns (typ) at 6V, 50 pF - ensures predictable timing margins in synchronous state machines |
| Input Capacitance | 10 pF - minimizes loading on preceding logic stages and preserves signal integrity |
Pinout & Package
CD74HC175EE4 is supplied in a 16-pin plastic dual in-line package (PDIP), with 0.3-inch body width and standard through-hole mounting. Pin 1 is located at the top-left corner when the notch faces upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Master Reset (active-low) | Asynchronously clears all four Q outputs to 0 and Q̅ to 1; level-sensitive, independent of clock |
| 2 (Q0) | Complementary Output 0 | Inverted output of first flip-flop; matches Q0 timing with opposite logic polarity |
| 3 (Q0) | True Output 0 | Primary output of first flip-flop; updated only on rising CP edge when MR is high |
| 4 (D0) | Data Input 0 | Samples input logic level prior to CP rising edge; subject to 14 ns setup/5 ns hold at 6V |
| 5 (D1) | Data Input 1 | Independent data input for second flip-flop; electrically identical to D0 |
| 6 (Q1) | True Output 1 | Primary output of second flip-flop; synchronized to same CP and MR signals |
| 7 (Q1) | Complementary Output 1 | Inverted version of Q1; provides both polarities for differential routing or enable logic |
| 8 (GND) | Ground Reference | Power return path; must be low-impedance to maintain noise margin and switching stability |
| 9 (Q3) | True Output 3 | Primary output of fourth flip-flop; shares CP/MR with all others |
| 10 (Q3) | Complementary Output 3 | Inverted output of fourth flip-flop; completes full quad complementary pair set |
| 11 (D3) | Data Input 3 | Final independent D input; supports parallel 4-bit data capture or shift-register staging |
| 12 (D2) | Data Input 2 | Third independent D input; enables full 4-bit parallel load capability |
| 13 (Q2) | True Output 2 | Primary output of third flip-flop; occupies middle position in quad sequence |
| 14 (Q2) | Complementary Output 2 | Inverted output of third flip-flop; maintains consistent pinout symmetry across all stages |
| 15 (CP) | Common Clock Input | Rising-edge sensitive; triggers simultaneous sampling of all four D inputs |
| 16 (VCC) | Positive Supply | 2V–6V CMOS supply; decoupling capacitor required near pin for transient current suppression |
Key Features
| Feature | Design Value |
|---|---|
| Quad D-type flip-flops with shared CP and MR | Enables compact 4-bit register implementation with single-clock synchronization and global reset - reduces PCB routing complexity vs. discrete flip-flop ICs |
| Positive-edge clock triggering | Ensures deterministic sampling aligned to rising transitions - eliminates metastability risks from asynchronous clock domain crossings |
| Complementary Q/Q̅ outputs per stage | Provides native inverted logic without external inverters - saves board space and propagation delay in feedback or enable paths |
| 2V to 6V wide supply range | Supports direct interface with 3.3V microcontrollers, 5V legacy peripherals, and 2.5V/3.3V FPGAs without level-shifting circuitry |
| –55°C to +125°C operation | Validated for extreme-environment applications including avionics, downhole tools, and motor drive controllers where thermal cycling exceeds commercial grade limits |
Applications
| Industrial PLC Register Bank | Aerospace Telemetry Buffer |
|---|---|
Use Scenario: Storing 4-bit status flags (e.g., fault codes, sensor readiness, watchdog states) in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Quad D-type flip-flop acting as a synchronous latch bank, capturing parallel status bits on each scan cycle's clock edge. Use Value: Guaranteed –55°C to +125°C operation ensures reliability in uncontrolled cabinet environments; complementary outputs simplify AND/OR logic for alarm generation. | Use Scenario: Temporarily holding telemetry words before serial transmission in satellite subsystems with radiation-tolerant requirements. IC Role / Device Role / Timing Role: Edge-triggered data register synchronizing analog-to-digital converter outputs to a centralized timing bus. Use Value: Low 30 ns propagation delay at 6V enables tight timing alignment with upstream ADC sampling clocks; HC family's low ICC (<160 µA) extends battery life in dormant modes. |
| Legacy Test Equipment Control Logic | Automotive Engine Control Interface |
Use Scenario: Replacing obsolete 74LS175 in aging automated test equipment where TTL compatibility and long-term component availability are critical. IC Role / Device Role / Timing Role: Drop-in functional replacement providing identical pinout and logic behavior while reducing power consumption by >80% versus LS-TTL. Use Value: Direct LSTTL load compatibility (10 loads) and 30% noise immunity eliminate redesign; PDIP packaging allows hand-soldering rework in field-service scenarios. | Use Scenario: Capturing crankshaft position sensor pulses in engine control units where ambient temperatures exceed 105°C near exhaust manifolds. IC Role / Device Role / Timing Role: Synchronous edge-triggered latch converting noisy analog comparator outputs into clean digital timing edges for ECU timing calculations. Use Value: Specified operation to +125°C and robust 30% noise margin prevent false triggering from EMI; MR pin enables safe reset during cold-start initialization sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad D-type flip-flop with reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HCT175EE4 | Operates only from 4.5V to 5.5V; TTL-compatible input thresholds (VIH ≥ 2V, VIL ≤ 0.8V); identical pinout and function | Better suited for strict 5V-only systems interfacing directly with legacy TTL logic; not suitable for 2V–3.3V mixed-supply designs | Select CD74HCT175EE4 when interfacing exclusively with 5V TTL families and requiring guaranteed VIH/VIL compatibility - otherwise prefer CD74HC175EE4 for wider voltage flexibility. |
| SN74HC175N | Same HC logic family, 2V–6V operation, and –40°C to +85°C rating; identical functionality and pinout; manufactured by TI but catalog-grade (non-military temp range) | Limited to commercial/industrial temperature range; unsuitable for extended-temperature deployments such as aerospace or under-hood automotive | Choose SN74HC175N for cost-sensitive, non-extreme-environment applications where full –55°C to +125°C qualification is unnecessary. |
Compared with CD74HCT175EE4, CD74HC175EE4 offers broader supply voltage support and superior temperature resilience, while SN74HC175N provides identical logic behavior at lower cost but sacrifices military-grade thermal coverage - selection depends strictly on system-level voltage architecture and environmental certification requirements.
Availability
CD74HC175EE4 is available at Aetrix Electronics and suitable for industrial automation, aerospace telemetry, and automotive engine control applications requiring stable component supply, long-lifecycle support, and extended-temperature performance.
Supply support for CD74HC175EE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability logic families.
CD74HC175EE4 belongs to TI's CD74HC high-speed CMOS logic series, engineered for drop-in replacement of legacy TTL in demanding environments where low power, wide temperature range, and noise immunity are essential.
FAQ
What is the maximum clock frequency supported by CD74HC175EE4?
The CD74HC175EE4 supports a maximum clock frequency of 35 MHz at VCC = 6V, 29 MHz at VCC = 5V, and 4 MHz at VCC = 2V - values measured with 50 pF capacitive load and specified across the full –55°C to +125°C operating range. These frequencies reflect guaranteed timing margins under worst-case conditions, not typical-case estimates.
Does CD74HC175EE4 have true and complementary outputs for each flip-flop?
Yes, CD74HC175EE4 provides both true (Qn) and complementary (Q̅n) outputs for all four internal D-type flip-flops - pins 2/3 (Q0/Q̅0), 6/7 (Q1/Q̅1), 13/14 (Q2/Q̅2), and 9/10 (Q3/Q̅3). This eliminates the need for external inverters in applications requiring dual-polarity logic signals.
Can CD74HC175EE4 operate at 3.3V supply voltage?
Yes, CD74HC175EE4 is fully specified to operate at 3.3V (within its 2V–6V range), with validated DC and AC parameters including VIH = 2.31V (min), VIL = 1.0V (max), tPLH = 44 ns (max at –55°C to +125°C), and ICC ≤ 80 µA (max at 25°C) - making it suitable for mixed-voltage 3.3V/5V system interfaces.
Is CD74HC175EE4 pin-compatible with the older 74LS175?
Yes, CD74HC175EE4 is pin-compatible and functionally equivalent to the 74LS175, sharing identical 16-pin PDIP layout, truth table behavior, and active-low master reset. However, CD74HC175EE4 requires no pull-up resistors, draws significantly less current, and operates over a wider voltage and temperature range than the bipolar LS variant.
What is the purpose of the MR (Master Reset) pin on CD74HC175EE4?
The MR pin on CD74HC175EE4 is an asynchronous, active-low input that forces all four Q outputs to logic 0 and all four Q̅ outputs to logic 1 immediately - independent of the clock signal. This enables deterministic system initialization, error recovery, or safety shutdown without waiting for a clock edge.
CD74HC175EE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 35 MHz
- Max Propagation Delay @ V, Max CL:
- 30ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
CD74HC175EE4 FAQ
1.How can I place an order for CD74HC175EE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC175EE4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CD74HC175EE4 reliable?
The price and inventory of CD74HC175EE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC175EE4 is usually 5 days.
3.What payment methods are accepted for CD74HC175EE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC175EE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC175EE4?
CD74HC175EE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC175EE4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CD74HC175EE4?
For technical support, including CD74HC175EE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC175EE4 requirements.
6.How does Aetrix verify that CD74HC175EE4 is sourced from the original manufacturer or authorized distributors?
All CD74HC175EE4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CD74HC175EE4 meets industry standards.
7.What is the process for return or replacement of CD74HC175EE4?
All CD74HC175EE4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC175EE4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CD74HC175EE4 part is unused and in its original packaging.
Return procedure for CD74HC175EE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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