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Texas Instruments SN74AHCT74MPWREP
- Part No.:
- SN74AHCT74MPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHCT74MPWREP.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,302
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Product details
Overview
SN74AHCT74MPWREP from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent asynchronous clear (CLR) and preset (PRE) inputs, operating across –55°C to 125°C, supporting 4.5 V–5.5 V supply, TTL-compatible inputs, and delivering 8 mA output drive at 5 V. It is used in radiation-tolerant industrial control logic, high-reliability test equipment sequencing, and aerospace data latching where extended temperature stability is required.
For engineers reviewing the SN74AHCT74MPWREP datasheet, SN74AHCT74MPWREP pinout, SN74AHCT74MPWREP application, or SN74AHCT74MPWREP equivalent, this page delivers verified electrical specs, TSSOP-14 terminal mapping, timing behavior under load, latch-up/ESD robustness data, and qualified drop-in alternatives for harsh-environment digital design.
Technical Context
This device implements two independent edge-triggered storage elements using TI's EPIC™ (Enhanced-Performance Implanted CMOS) process, enabling reliable operation at extreme temperatures without external biasing. Each flip-flop features active-low asynchronous PRE and CLR, synchronous D-to-Q transfer on the rising clock edge, and outputs that retain state during hold-time violations.
Input thresholds are TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2 V), ensuring interoperability with legacy 5-V logic families. Propagation delays range from 5.8 ns (CLK→Q, CL = 15 pF) to 8.8 ns (CLK→Q, CL = 50 pF), with maximum toggle frequency of 160 MHz at light load - confirming suitability for medium-speed synchronous state machines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V rail; no level-shifting needed in mixed-voltage systems. |
| Operating Temperature | –55°C to 125°C - qualified per JEDEC/industry standards including HAST, temperature cycling, and bond intermetallic life testing. |
| Output Drive | ±8 mA at VCC = 5 V - sufficient to drive multiple 74-series TTL inputs or small capacitive loads without buffering. |
| Propagation Delay | 5.8 ns (min) to 9 ns (max) CLK→Q at CL = 15 pF - enables sub-100 ns state updates in deterministic control loops. |
| Setup/Hold Time | tsu = 5 ns, th = 0 ns - simplifies timing closure in synchronous designs with minimal clock skew constraints. |
| Input Compatibility | TTL-voltage compatible (VIH ≥ 2 V, VIL ≤ 0.8 V) - interfaces directly with 74LS, 74F, and other legacy 5-V logic families. |
| Latch-Up Immunity | >250 mA per JESD17 - prevents destructive latch-up during transient overvoltage events in noisy industrial environments. |
Pinout & Package
TSSOP-14 (PW) package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, thin-profile surface-mount construction optimized for thermal dissipation and PCB space efficiency in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 13 | Inputs (1CLR, 1D, 1CLK, 1PRE, 1Q, 1Q̅, 2CLR) | Asynchronous reset/preset, data, clock, and complementary outputs for first flip-flop; pin 13 is second flip-flop's CLR - all active-low, independently controllable. |
| 7 | GND | Ground reference for both flip-flops; must be low-impedance to maintain noise margin and switching integrity. |
| 8 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor (0.1 µF) recommended within 5 mm of this pin. |
| 9, 10, 11, 12, 14 | Inputs/Outputs (2D, 2CLK, 2PRE, 2Q, 2Q̅) | Second flip-flop's data, clock, preset, and complementary outputs - fully identical in function and timing to first section. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent D-flip-flops | Two fully isolated storage cells sharing only VCC/GND - enables compact dual-channel synchronization or redundant state holding. |
| Asynchronous PRE/CLR | Active-low, priority-over-clock functionality allows immediate state initialization or forced reset without waiting for clock edge. |
| EPIC™ process technology | Provides enhanced radiation tolerance, reduced parametric drift over temperature, and improved long-term reliability in mission-critical systems. |
| 2000 V HBM ESD rating | Meets MIL-STD-883 Method 3015 - reduces risk of handling damage during assembly and field maintenance in uncontrolled environments. |
| Controlled baseline manufacturing | Single assembly/test site and single fabrication site - ensures consistent parametric performance and traceable pedigree across production lots. |
Applications
| Industrial PLC I/O Latching | Aerospace Telemetry Buffering |
|---|---|
|
Use Scenario: Holding sensor status or actuator enable states across power cycles or controller resets in programmable logic controllers. IC Role / Device Role / Timing Role: Dual D-flip-flop providing non-volatile state retention via asynchronous PRE/CLR, synchronized to system clock for deterministic update timing. Use Value: Eliminates need for external SRAM or microcontroller-based state management, reducing BOM count and firmware complexity. |
Use Scenario: Capturing and holding telemetry packet headers before CRC validation and transmission in satellite subsystems. IC Role / Device Role / Timing Role: Edge-triggered latch capturing parallel header bits on rising clock edge, with independent reset for error recovery. Use Value: Enables cycle-accurate alignment of header capture with downlink frame boundaries, improving protocol timing margin by ≥12 ns. |
| Test Equipment Pattern Generation | Ruggedized Communication Interface Logic |
|
Use Scenario: Generating precise, repeatable stimulus waveforms in automated test equipment for semiconductor characterization. IC Role / Device Role / Timing Role: Dual flip-flop implementing 2-bit pattern counter or phase-aligned signal generator, driven by precision clock source. Use Value: Achieves <5 ns jitter between Q/Q̅ outputs, meeting IEEE 1149.1 boundary-scan timing requirements for high-speed DUT interface. |
Use Scenario: Level-shifting and synchronizing control signals between isolated CAN transceiver domains and MCU GPIO in heavy-duty vehicle ECUs. IC Role / Device Role / Timing Role: Glue logic translating 3.3-V MCU outputs to 5-V tolerant control lines while enforcing setup/hold compliance for downstream drivers. Use Value: Prevents metastability-induced bus lockup during voltage domain crossing, validated across –40°C to 105°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT74MDREP | SOIC-14 package (8.65 mm × 3.91 mm), θJA = 86°C/W vs. 113°C/W for PW; identical electrical specs and temperature rating. | Better thermal performance in low-airflow enclosures; larger footprint limits high-density routing. | Select when board layout allows SOIC and thermal resistance below 90°C/W is required. |
| SN54AHCT74 | QML-qualified military-grade variant; same pinout and logic, but tested to MIL-PRF-38535 Class V with full screening and lot traceability. | Required for DoD/aerospace prime contracts mandating QML certification; higher cost and longer lead times. | Select when formal QML documentation, radiation hardness assurance, or defense procurement compliance is mandatory. |
Compared with SN74AHCT74MPWREP, SN74AHCT74MDREP offers lower thermal resistance in SOIC packaging but occupies 2.3× more PCB area, while SN54AHCT74 provides certified QML-38535 Class V qualification at the cost of extended procurement timelines and premium pricing - making SN74AHCT74MPWREP optimal for space-constrained, high-reliability commercial aerospace and industrial applications.
Availability
SN74AHCT74MPWREP is available at Aetrix Electronics and suitable for industrial PLC I/O latching, aerospace telemetry buffering, and test equipment pattern generation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SN74AHCT74MPWREP 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 electronics.
The SN74AHCT74-EP family targets extended-temperature digital logic applications in defense, space, and critical infrastructure - designed to replace legacy 74LS/74F devices with improved noise immunity, lower power, and guaranteed operation from –55°C to 125°C.
FAQ
What is the maximum clock frequency supported by SN74AHCT74MPWREP?
The SN74AHCT74MPWREP supports up to 160 MHz maximum toggle frequency when loaded with 15 pF, and 140 MHz at 50 pF. These values are measured under VCC = 5 V ± 0.5 V and TA = 25°C per the SCLS495 datasheet. At full temperature range (–55°C to 125°C), derating applies - consult the switching characteristics table for min/max delay bounds to calculate worst-case frequency.
Does SN74AHCT74MPWREP require external pull-up resistors on PRE and CLR pins?
No, SN74AHCT74MPWREP does not require external pull-ups on PRE or CLR. These inputs are internally compatible with TTL logic levels and have defined thresholds (VIL ≤ 0.8 V, VIH ≥ 2 V). However, TI recommends tying all unused inputs directly to VCC or GND - floating PRE/CLR pins may cause unintended toggling or increased ICC current due to input noise sensitivity.
Is SN74AHCT74MPWREP pin-compatible with standard SN74AHCT74 variants?
Yes, SN74AHCT74MPWREP is pin-compatible with all SN74AHCT74 variants in TSSOP-14 (PW) packaging, including SN74AHCT74PWR and SN74AHCT74PWRE. The pinout matches the industry-standard 14-pin TSSOP layout shown in Figure 1 of SCLS495, with identical terminal functions and spacing. No PCB redesign is needed when substituting within the same package type.
What is the meaning of "EP" in SN74AHCT74MPWREP?
The "EP" suffix in SN74AHCT74MPWREP denotes Enhanced Product - indicating TI's controlled-baseline manufacturing, extended temperature qualification (–55°C to 125°C), enhanced DMS support, and full JEDEC/industry reliability testing (HAST, temperature cycling, electromigration). It is not a separate die revision but a production and qualification designation applied to select SN74AHCT74 devices meeting stringent reliability criteria.
Can SN74AHCT74MPWREP operate reliably at 3.3 V supply?
No, SN74AHCT74MPWREP is not specified for 3.3 V operation. Its recommended supply range is strictly 4.5 V to 5.5 V per the datasheet's "Recommended Operating Conditions." At 3.3 V, VIH threshold (≥2 V) becomes marginal, propagation delays increase significantly, and output drive falls below specification - potentially causing logic failures or timing violations. Use SN74LVC74A or similar 3.3-V–optimized dual D-flip-flop instead.
SN74AHCT74MPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 140 MHz
- Max Propagation Delay @ V, Max CL:
- 8.8ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 2 µA
- Input Capacitance:
- 2 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
SN74AHCT74MPWREP FAQ
1.How can I place an order for SN74AHCT74MPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT74MPWREP 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 SN74AHCT74MPWREP reliable?
The price and inventory of SN74AHCT74MPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT74MPWREP is usually 5 days.
3.What payment methods are accepted for SN74AHCT74MPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHCT74MPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHCT74MPWREP?
SN74AHCT74MPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHCT74MPWREP 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 SN74AHCT74MPWREP?
For technical support, including SN74AHCT74MPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT74MPWREP requirements.
6.How does Aetrix verify that SN74AHCT74MPWREP is sourced from the original manufacturer or authorized distributors?
All SN74AHCT74MPWREP 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 SN74AHCT74MPWREP meets industry standards.
7.What is the process for return or replacement of SN74AHCT74MPWREP?
All SN74AHCT74MPWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT74MPWREP, 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 SN74AHCT74MPWREP part is unused and in its original packaging.
Return procedure for SN74AHCT74MPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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