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Texas Instruments CD74HCT175M
- Part No.:
- CD74HCT175M
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HCT175M.pdf
- Description:
- IC FF D-TYPE SNGL 4BIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:357
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Product details
Overview
CD74HCT175M from Texas Instruments is a high-speed CMOS quad D-type flip-flop with asynchronous master reset, operating at 4.5V–5.5V, featuring complementary Q/Q̅ outputs per stage, positive-edge clock triggering, and -55°C to +125°C temperature range - used in synchronous data latching and register design within industrial control logic circuits.
For engineers reviewing the CD74HCT175M datasheet, CD74HCT175M pinout, CD74HCT175M application, or CD74HCT175M equivalent, this page delivers verified functional identity, SOIC-16 package mapping, timing parameters (tPLH/tPHL = 33 ns max @ 5V), input compatibility with LSTTL (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and validated alternative part options for register-level logic replacement.
Technical Context
The CD74HCT175M implements four independent edge-triggered D-type flip-flops sharing one common clock (CP) and one active-low asynchronous master reset (MR). All Q outputs synchronize to the rising edge of CP, while MR forces Q = 0 and Q̅ = 1 regardless of clock state.
It uses silicon-gate CMOS technology with TTL-compatible inputs, enabling direct interfacing with legacy LSTTL logic without level-shifting. Propagation delay (33 ns max @ CL = 50 pF, VCC = 4.5 V) and balanced transition times support reliable operation in multi-stage synchronous systems up to 25 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT - TTL-compatible CMOS with 4.5–5.5 V supply and LSTTL input thresholds |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial and military-grade environments |
| Propagation Delay | 33 ns max (CP→Q, CL = 50 pF, VCC = 4.5 V) - enables 25 MHz clock operation in register chains |
| Input Voltage Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - ensures robust noise margin when driven by standard LSTTL outputs |
| Output Drive Capability | 10 LSTTL loads - sufficient to fan out directly to multiple 74LS-series inputs without buffers |
| Power Consumption | ICC ≤ 160 µA max (-55°C to +125°C) - low static power vs. bipolar TTL equivalents |
| Reset Behavior | Asynchronous MR active-low - immediate Q = 0 / Q̅ = 1 assertion independent of clock edge |
Pinout & Package
CD74HCT175M is supplied in a 16-pin SOIC (Small Outline Integrated Circuit) package, surface-mount compatible, with 1.27 mm pitch and JEDEC MS-012AC outline. Thermal resistance θJA = 73°C/W supports operation under sustained load in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Master Reset | Active-low asynchronous reset controlling all four flip-flops simultaneously |
| 2 (Q0) | Stage 0 Output | True output of first D flip-flop; synchronized to CP rising edge |
| 3 (Q̅0) | Stage 0 Complement Output | Inverted output of first D flip-flop; provides complementary latch state |
| 4 (D0) | Stage 0 Data Input | Input sampled on CP rising edge to set Q0/Q̅0 on next clock |
| 5 (D1) | Stage 1 Data Input | Input sampled on CP rising edge to set Q1/Q̅1 on next clock |
| 6 (Q1) | Stage 1 Output | True output of second D flip-flop; matches Q0 timing behavior |
| 7 (Q̅1) | Stage 1 Complement Output | Inverted output of second D flip-flop; matches Q̅0 timing behavior |
| 8 (GND) | Ground Reference | Primary return path for logic and I/O current; must be low-impedance |
| 9 (Q3) | Stage 3 Output | True output of fourth D flip-flop; shares same CP/MR timing as others |
| 10 (Q̅3) | Stage 3 Complement Output | Inverted output of fourth D flip-flop; complements Q3 state |
| 11 (D3) | Stage 3 Data Input | Input sampled on CP rising edge to set Q3/Q̅3 on next clock |
| 12 (D2) | Stage 2 Data Input | Input sampled on CP rising edge to set Q2/Q̅2 on next clock |
| 13 (Q̅2) | Stage 2 Complement Output | Inverted output of third D flip-flop; matches Q̅0–Q̅1 behavior |
| 14 (Q2) | Stage 2 Output | True output of third D flip-flop; matches Q0–Q1 timing behavior |
| 15 (CP) | Common Clock | Positive-edge-triggered clock input shared across all four flip-flops |
| 16 (VCC) | Supply Voltage | 4.5–5.5 V DC power rail; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad D-type flip-flop with common clock and reset | Enables compact 4-bit register implementation with single control signal coordination |
| Complementary Q/Q̅ outputs per stage | Eliminates need for external inverters in toggle or differential bus applications |
| LSTTL-compatible input thresholds | Direct interface with 74LS/74ALS families without level translation circuitry |
| Wide temperature range (-55°C to +125°C) | Validated for use in aerospace, defense, and under-hood automotive electronics |
| Low quiescent current (≤160 µA) | Reduces system-level standby power vs. equivalent bipolar TTL registers |
Applications
| Industrial PLC Register Bank | Test Equipment Pattern Generator |
|---|---|
Use Scenario: Storing 4-bit status flags (e.g., fault codes, mode selections) in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Synchronous data latch holding parallel inputs until next scan cycle; MR initializes all flags on power-up or fault recovery. Use Value: Single CD74HCT175M replaces four discrete 74LS74s, reducing board area and interconnect complexity while maintaining LSTTL compatibility. | Use Scenario: Generating deterministic 4-bit test vectors for digital IC validation using microcontroller-controlled stimulus sequences. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing pattern data from MCU GPIO lines on each clock pulse. Use Value: Complementary outputs allow simultaneous true/inverted vector drive to DUT, supporting both active-high and active-low test modes. |
| Automotive Body Control Module | Military Radio Control Logic |
Use Scenario: Latching door lock/unlock commands and window position states in vehicle body electronics under wide ambient temperature swings. IC Role / Device Role / Timing Role: Temperature-hardened register storing command bits synchronized to central CAN message scheduler clock. Use Value: -55°C to +125°C rating ensures reliable operation in engine bay or trunk-mounted ECUs without derating. | Use Scenario: Implementing secure configuration registers in encrypted radio transceivers requiring tamper-resistant initialization. IC Role / Device Role / Timing Role: Asynchronous MR enables hardware-initiated zeroization of sensitive control bits during security events. Use Value: Direct LSTTL compatibility allows integration into legacy MIL-STD-883-compliant designs without redesigning upstream drivers. |
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 |
|---|---|---|---|
| SN74HCT175N | Same logic function and pinout; PDIP-16 package instead of SOIC-16; identical electrical specs | Suitable for through-hole prototyping or legacy board rework where SOIC footprint unavailable | Select SN74HCT175N only when manual soldering or socket-based testing is required |
| CD74HC175M | Same SOIC-16 package but HC-family: 2–6 V operation, higher noise immunity, no LSTTL input compatibility | Applicable in mixed-voltage systems (e.g., 3.3 V logic domains) where LSTTL interfacing is unnecessary | Choose CD74HC175M when supply voltage flexibility or lower dynamic power outweighs need for TTL compatibility |
Compared with CD74HCT175M, SN74HCT175N offers identical functionality in through-hole format for lab validation, while CD74HC175M trades LSTTL input compatibility for wider VCC range and lower ICC - making it suitable for modern low-voltage embedded systems where legacy interface is not required.
Availability
CD74HCT175M is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and automotive electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HCT175M 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 over 90 years of innovation in high-reliability components.
The CD74HCT175M belongs to TI's High-Speed CMOS Logic family, designed specifically for drop-in replacement of legacy TTL registers while delivering CMOS power efficiency and extended temperature operation.
FAQ
What is the maximum clock frequency supported by the CD74HCT175M?
The CD74HCT175M supports a maximum clock frequency of 25 MHz at VCC = 4.5 V and TA = 25°C, with guaranteed minimum fMAX = 16 MHz across the full -55°C to +125°C operating range. This is derived from the specified maximum propagation delay (tPLH/tPHL = 50 ns) and setup/hold time requirements in the official datasheet SCHS160C.
Does the CD74HCT175M require external pull-up resistors on its inputs?
No, the CD74HCT175M does not require external pull-up resistors on MR, CP, or D inputs because all inputs have CMOS-compatible internal structure with negligible leakage (II ≤ ±1 µA) and defined logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V). Unused inputs should be tied to VCC or GND to prevent floating states.
Can the CD74HCT175M drive LED indicators directly?
No, the CD74HCT175M cannot drive LEDs directly due to its limited output current capability (±25 mA per pin absolute maximum, but typical drive is rated for 10 LSTTL loads ≈ 0.4 mA low-level sink). For LED interfacing, an external transistor or buffer such as ULN2003 is required to provide sufficient current and voltage compliance.
Is the CD74HCT175M pin-compatible with the CD74HC175M?
Yes, the CD74HCT175M is pin-compatible with the CD74HC175M - both use identical SOIC-16 packaging and share identical pin assignments for MR, CP, D0–D3, Q0–Q3, Q̅0–Q̅3, VCC, and GND. However, they differ electrically: CD74HCT175M requires 4.5–5.5 V and supports LSTTL inputs, whereas CD74HC175M operates from 2–6 V with CMOS-only input thresholds.
What is the meaning of the 'M96G4' suffix in CD74HCT175M96G4?
The 'M96G4' suffix in CD74HCT175M96G4 indicates: M = SOIC package, 96 = tape-and-reel packaging (2500 units per reel), and G4 = TI's internal assembly/test site code. This ordering variant is active and RoHS-compliant, with Level-1 moisture sensitivity and NIPDAU lead finish per TI's packaging documentation.
CD74HCT175M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Clock Frequency:
- 25 MHz
- Max Propagation Delay @ V, Max CL:
- 33ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD74HCT175M FAQ
1.How can I place an order for CD74HCT175M through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HCT175M 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 CD74HCT175M reliable?
The price and inventory of CD74HCT175M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HCT175M is usually 5 days.
3.What payment methods are accepted for CD74HCT175M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HCT175M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HCT175M?
CD74HCT175M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HCT175M 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 CD74HCT175M?
For technical support, including CD74HCT175M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HCT175M requirements.
6.How does Aetrix verify that CD74HCT175M is sourced from the original manufacturer or authorized distributors?
All CD74HCT175M 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 CD74HCT175M meets industry standards.
7.What is the process for return or replacement of CD74HCT175M?
All CD74HCT175M units undergo pre-shipment inspection (PSI). If there is an issue with CD74HCT175M, 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 CD74HCT175M part is unused and in its original packaging.
Return procedure for CD74HCT175M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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