My Inquiry
My Account
Texas Instruments CD54HCT174F
- Part No.:
- CD54HCT174F
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
CD54HCT174F.pdf
- Description:
- HIGH SPEED CMOS LOGIC HEX D-TYPE
- Quantity:
- Payment:
- Shipping:
Inventory:4,782
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CD54HCT174F from Texas Instruments is a military-grade, high-speed CMOS hex D-type flip-flop with asynchronous common reset, designed for synchronous data latching in harsh-environment digital systems. It features positive-edge clock triggering, -55°C to +125°C operating range, 4.5V–5.5V supply, 60ns max setup time at 5V, and direct LSTTL input compatibility (VIL ≤ 0.8V, VIH ≥ 2.0V).
For engineers reviewing the CD54HCT174F datasheet, CD54HCT174F pinout, CD54HCT174F application, or CD54HCT174F equivalent, key selection criteria include its CERDIP-16 packaging for hermetic reliability, guaranteed operation across extended temperature extremes, compatibility with legacy TTL logic families, and deterministic edge-triggered behavior in radiation-tolerant or aerospace control subsystems.
Technical Context
The CD54HCT174F implements six independent master-slave D flip-flops sharing a single buffered clock (CP) and common asynchronous reset (MR). Its silicon-gate CMOS architecture delivers TTL-compatible input thresholds while maintaining CMOS-level quiescent current (≤160 µA over full temperature range).
Timing behavior is strictly edge-controlled: data on D₀–D₅ is captured on the low-to-high transition of CP, provided setup (≥16 ns min at 5V) and hold (≥5 ns min) requirements are met; MR asserts all Q outputs low independently of clock state, with removal time ≤18 ns relative to next CP edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | HCT - TTL-compatible inputs, CMOS outputs, 4.5V–5.5V operation |
| Operating Temperature | -55°C to +125°C - Qualified for military/aerospace embedded control |
| Propagation Delay (CP→Q) | 60 ns max at 5V, CL = 50 pF - Enables reliable 17 MHz synchronous operation |
| Input Compatibility | LSTTL - VIL ≤ 0.8V, VIH ≥ 2.0V - Interfacing without level-shifting circuitry |
| Output Drive | 10 LSTTL loads - Sufficient fanout for bus-oriented register staging |
| Reset Behavior | Asynchronous active-low MR - Immediate Q-output clearing regardless of clock phase |
Pinout & Package
CD54HCT174F is housed in a 16-lead ceramic dual in-line package (CERDIP, package code J), rated for hermetic sealing and MIL-PRF-38535 Class B compliance. The package provides mechanical robustness and thermal stability under extreme thermal cycling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 6, 7 | D₀–D₅ Data Inputs | Independent asynchronous data inputs for each of six D-type flip-flops |
| 3 | CP Clock Input | Buffered positive-edge-triggered clock shared by all six flip-flops |
| 8 | GND | Ground reference for logic and power return path |
| 9, 10, 11, 12, 13, 15 | Q₀–Q₅ Outputs | True outputs corresponding to stored D-input states after clock edge |
| 14 | MR Master Reset | Asynchronous active-low reset controlling all six outputs simultaneously |
| 16 | VCC | Positive supply rail (4.5V–5.5V); decoupling required per MIL-STD-883 |
Key Features
| Feature | Design Value |
|---|---|
| Extended Temperature Operation | Rated -55°C to +125°C - Enables deployment in avionics, downhole tools, and space-qualified electronics |
| Direct LSTTL Input Compatibility | VIL ≤ 0.8V, VIH ≥ 2.0V at VCC = 5V - Eliminates need for external interface buffers in mixed-logic systems |
| Low Quiescent Current | ≤160 µA over full temperature range - Critical for battery-backed or low-power standby modes |
| Hermetic CERDIP Packaging | MIL-PRF-38535 compliant - Provides moisture resistance and long-term reliability in high-humidity or vacuum environments |
| Edge-Triggered Determinism | Guaranteed setup/hold timing (tSU ≥ 16 ns, tH ≥ 5 ns at 5V) - Ensures predictable metastability-free sampling in real-time control loops |
Applications
| Flight Control Register Bank | Secure Boot Configuration Latch |
|---|---|
Use Scenario: Storing validated flight mode commands and sensor calibration coefficients in airborne vehicle management units. IC Role / Device Role / Timing Role: Hex D-type flip-flop providing synchronized, glitch-free storage of 6-bit configuration words on rising clock edges. Use Value: Asynchronous MR enables immediate safe-state reset during fault detection; CERDIP packaging ensures integrity under vibration and thermal shock. | Use Scenario: Capturing cryptographic key enable bits and boot policy flags during power-on initialization in trusted execution environments. IC Role / Device Role / Timing Role: Secure latch holding immutable hardware-root-of-trust settings prior to processor execution. Use Value: Guaranteed -55°C to +125°C operation supports cold-start in ground vehicles and hot environments; LSTTL compatibility simplifies integration with legacy secure MCU peripherals. |
| Radiation-Hardened Telemetry Buffer | Redundant Sensor Interface Register |
Use Scenario: Temporarily storing digitized telemetry packets from radiation-tolerant ADCs before serial transmission to ground stations. IC Role / Device Role / Timing Role: Edge-triggered register bank capturing parallel sensor word outputs for subsequent serialization. Use Value: Low propagation delay (60 ns max) enables tight timing alignment with upstream sampling clocks; hermetic seal prevents parametric drift in low-pressure orbital conditions. | Use Scenario: Holding redundant analog sensor readings (e.g., pressure, temperature) from dual-channel acquisition paths in industrial safety controllers. IC Role / Device Role / Timing Role: Synchronized latch ensuring both sensor values are captured within one clock cycle for cross-validation. Use Value: Common MR allows simultaneous clearing of mismatched readings; 10-LSTTL fanout drives comparators and diagnostic logic without buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex D-type flip-flop with reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HCT174E | Plastic DIP package, commercial/military temp (-55°C to +125°C), same logic function and pinout | Lacks hermetic seal and MIL-PRF-38535 qualification; suitable for non-critical ground-based systems | Select when cost sensitivity outweighs need for CERDIP-level reliability and radiation tolerance |
| SN74HCT174N | Commercial-grade PDIP, 0°C to +70°C only, identical electrical specs except temperature range | Not qualified for extended temperature or high-reliability environments; limited to benign indoor applications | Choose only for prototyping or non-mission-critical consumer/industrial control where ambient conditions remain stable |
Compared with CD74HCT174E and SN74HCT174N, the CD54HCT174F uniquely combines military-grade temperature range, hermetic CERDIP packaging, and MIL-PRF-38535 compliance-making it the sole option for flight-critical, space-bound, or high-reliability infrastructure where long-term parameter stability under environmental stress is mandatory.
Availability
CD54HCT174F is available at Aetrix Electronics and suitable for flight control systems, secure boot modules, radiation-hardened telemetry, and redundant sensor interfaces requiring stable component supply across extended temperature extremes and long product lifecycles.
Supply support for CD54HCT174F 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 high-reliability logic solutions, with decades of heritage in military and aerospace component development.
The CD54HCT174F belongs to TI's military-grade HCT logic family, engineered specifically for high-integrity digital control in defense, avionics, and space applications where extended temperature operation and hermetic packaging are non-negotiable.
FAQ
What is the maximum clock frequency supported by the CD54HCT174F?
The CD54HCT174F supports a maximum clock frequency of 17 MHz at VCC = 5V over the full -55°C to +125°C temperature range, based on worst-case propagation delay (60 ns) and setup/hold timing constraints. This value is derived from fMAX = 1 / (tPLH + tSU) under specified load and voltage conditions, and is validated per MIL-PRF-38535 test procedures.
Does the CD54HCT174F require external pull-up or pull-down resistors on its inputs?
No, the CD54HCT174F does not require external pull-up or pull-down resistors on CP, MR, or D inputs. Its CMOS input structure exhibits ≤1 µA leakage current (II ≤ ±1 µA), and input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V at 5V) are internally defined. Unused inputs should be tied to VCC or GND per MIL-STD-883 requirement, but passive termination is unnecessary.
Is the CD54HCT174F pin-compatible with the standard LS174 TTL device?
Yes, the CD54HCT174F is functionally and pin-compatible with the 74LS174, as confirmed in the datasheet: "The 'HCT174 is functional as well as, pin compatible to the 'LS174." Pin assignments for D₀–D₅, Q₀–Q₅, CP, MR, VCC, and GND match exactly, enabling drop-in replacement in legacy TTL designs while delivering lower power and improved noise immunity.
What is the absolute maximum supply voltage rating for the CD54HCT174F?
The absolute maximum DC supply voltage (VCC) for the CD54HCT174F is 7V, as specified in the Absolute Maximum Ratings table. Operation above 5.5V violates the recommended HCT operating range and risks accelerated parametric degradation or latent failure, especially under temperature stress. Sustained operation must remain within 4.5V–5.5V per datasheet limits.
How is the CD54HCT174F marked on the package for traceability?
The CD54HCT174F carries the part marking "5962-8974301EA" on the top surface of its CERDIP package, per the TI Packaging Information Addendum. This 5962-number denotes its QML-38535 Class B qualification, and is accompanied by date code, lot trace, and manufacturer logo per MIL-STD-883 requirements for full traceability in defense supply chains.
CD54HCT174F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54HCT
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 6
- Clock Frequency:
- 25 MHz
- Max Propagation Delay @ V, Max CL:
- 40ns @ 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:
- Through Hole
- Supplier Device Package:
- 16-CDIP
CD54HCT174F FAQ
1.How can I place an order for CD54HCT174F through Aetrix?
Please submit a Request for Quotation (RFQ) for CD54HCT174F 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 CD54HCT174F reliable?
The price and inventory of CD54HCT174F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD54HCT174F is usually 5 days.
3.What payment methods are accepted for CD54HCT174F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD54HCT174F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD54HCT174F?
CD54HCT174F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD54HCT174F 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 CD54HCT174F?
For technical support, including CD54HCT174F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD54HCT174F requirements.
6.How does Aetrix verify that CD54HCT174F is sourced from the original manufacturer or authorized distributors?
All CD54HCT174F 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 CD54HCT174F meets industry standards.
7.What is the process for return or replacement of CD54HCT174F?
All CD54HCT174F units undergo pre-shipment inspection (PSI). If there is an issue with CD54HCT174F, 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 CD54HCT174F part is unused and in its original packaging.
Return procedure for CD54HCT174F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CD54HCT174F Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
