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Nexperia USA Inc. 74ABT74D,112
- Part No.:
- 74ABT74D,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74ABT74D,112.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,422
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Product details
Overview
74ABT74D,112 from Nexperia is a dual positive-edge-triggered D-type flip-flop with independent asynchronous set (active LOW) and reset (active LOW) inputs per channel, 4.5 V to 5.5 V supply operation, 250 MHz maximum clock frequency at 25 °C, and IOFF-enabled partial power-down protection. It functions as a synchronous storage element in TTL-compatible digital control logic, used for data latching, state registration, and clock-domain synchronization in industrial PLC I/O modules.
For engineers reviewing the 74ABT74D,112 datasheet, 74ABT74D,112 pinout, 74ABT74D,112 application, or 74ABT74D,112 equivalent, key selection criteria include guaranteed setup/hold timing (2.4 ns / 0 ns), low propagation delay (1.0–4.7 ns), IOFF backflow prevention, -40 °C to +85 °C industrial temperature range, and SO14 (SOT108-1) package compatibility with legacy PCB footprints.
Technical Context
The 74ABT74D implements two independent edge-triggered D flip-flops sharing no internal coupling-each with dedicated D, CP, SD, RD, Q, and Q̅ terminals. Its BiCMOS architecture enables TTL-level input compatibility and high-speed switching while maintaining robust noise immunity via defined VIH (≥2.0 V) and VIL (≤0.8 V) thresholds.
Asynchronous control is prioritized over clocked operation: active-LOW SD and RD override clock edges, forcing immediate Q/Q̅ states regardless of CP timing. The IOFF circuit disables outputs when VCC = 0 V, eliminating destructive backfeed current during hot-swap or partial system power-down sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V rail tolerances and brown-out resilience. |
| Max clock frequency | 150 MHz (–40 °C to +85 °C) - Supports high-speed control loops in motor drives and real-time I/O interfaces. |
| tPLH/tPHL | 1.0–4.7 ns (CP to Q/Q̅) - Enables sub-5 ns timing margins for 200+ MHz system clocks with derating. |
| Setup/hold time | tsu = 2.4 ns, th = 0 ns - Simplifies timing closure with zero hold requirement on D relative to CP rising edge. |
| IOFF leakage | ±100 μA at VCC = 0 V - Prevents >100 μA back-current into powered sections during partial shutdown. |
| Operating temperature | –40 °C to +85 °C - Qualified for industrial ambient environments without derating. |
| ESD rating | HBM >2000 V, CDM >1000 V - Survives handling and board-level ESD events without latch-up or parametric shift. |
Pinout & Package
74ABT74D,112 uses the SO14 plastic small outline package (SOT108-1), 14-pin, 3.9 mm body width, 1.27 mm lead pitch, with gull-wing leads and pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 (1RD, 2RD) | Asynchronous reset (active LOW) | Forces Q = LOW and Q̅ = HIGH immediately, overriding clock and data-used for master clear or fault recovery. |
| 2, 12 (1D, 2D) | Data input | Samples and holds logic level on rising CP edge; requires 2.4 ns setup before CP transition. |
| 3, 11 (1CP, 2CP) | Clock input (edge-triggered) | Triggers storage only on LOW-to-HIGH transition; immune to glitches during stable HIGH/LOW states. |
| 4, 10 (1SD, 2SD) | Asynchronous set (active LOW) | Forces Q = HIGH and Q̅ = LOW immediately-enables preset functionality independent of clock. |
| 5, 9 (1Q, 2Q) | True output | Reflects stored D value after CP edge; drives TTL loads up to 20 mA sink / 15 mA source. |
| 6, 8 (1Q̅, 2Q̅) | Complement output | Provides inverted logic state; supports differential signaling or enable/disable logic without external inverters. |
| 7 | GND | Reference ground for all I/O and internal circuitry; must be low-impedance for noise immunity. |
| 14 | VCC | Primary power supply; IOFF activation occurs automatically when VCC drops below functional threshold. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS process technology | Combines bipolar speed and CMOS low static power-delivers 250 MHz fmax with <50 μA ICC quiescent current. |
| IOFF partial power-down | Automatically disables outputs when VCC = 0 V, blocking backflow current to prevent damage in mixed-power systems. |
| TTL-level input compatibility | Accepts standard TTL VIH (≥2.0 V) and VIL (≤0.8 V), eliminating need for level-shifting in legacy 5 V logic designs. |
| Latch-up immunity | Exceeds 500 mA per JESD78B Class II Level A-ensures robustness against transient overcurrent events. |
| Power-up 3-state | Outputs remain high-impedance until VCC stabilizes above 2.0 V, preventing bus contention during power sequencing. |
Applications
| Industrial PLC I/O Expansion | Digital Power Supply Sequencing |
|---|---|
|
Use Scenario: Latching status signals from isolated sensor inputs in modular PLC backplanes. IC Role / Device Role / Timing Role: Dual-channel D flip-flop registers incoming 5 V logic states synchronized to a centralized control clock. Use Value: Zero hold time and 2.4 ns setup allow direct interface with fast optocoupler outputs without added delay buffers. |
Use Scenario: Coordinating enable sequencing of multiple DC-DC converters in telecom power shelves. IC Role / Device Role / Timing Role: Asynchronous SD/RD inputs assert hard reset or preset to initialize converter enable states prior to clock activation. Use Value: IOFF prevents backfeed from powered converters into unpowered control logic during staggered startup. |
| Test Equipment Pattern Generation | Legacy Bus Interface Logic |
|
Use Scenario: Generating deterministic stimulus waveforms for boundary-scan or functional test vectors. IC Role / Device Role / Timing Role: Stores pattern bits from shift registers and releases them synchronously on each clock edge to DUT pins. Use Value: 1.0 ns min propagation delay ensures tight skew control (<0.6 ns) between dual outputs for parallel bit alignment. |
Use Scenario: Adapting microcontroller GPIOs to legacy 5 V parallel buses (e.g., ISA, PC/104). IC Role / Device Role / Timing Role: Buffers and retimes address/data strobes while providing set/reset for bus arbitration flags. Use Value: Direct TTL compatibility eliminates level translators; SO14 footprint matches decades-old schematics and layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT74NSR | TSSOP-14 (SOT402-1); 0.65 mm pitch; 1.2 mm height - smaller footprint but higher assembly cost. | Preferred for space-constrained boards where reflow profile supports fine-pitch components. | Select when PCB real estate is critical and automated assembly capability exists. |
| 74LVC74AD,118 | 3.3 V only (1.65–3.6 V); lower drive (24 mA); no IOFF - lacks partial power-down protection. | Suitable for modern low-voltage systems but incompatible with 5 V buses or hot-swap scenarios. | Choose only for pure 3.3 V domains requiring lower power and no backfeed risk. |
Compared with SN74ABT74NSR and 74LVC74AD,118, the 74ABT74D,112 uniquely combines 5 V tolerance, IOFF safety, SO14 drop-in replaceability, and industrial temperature support-making it the sole option for retrofitting legacy 5 V control logic with partial power-down capability.
Availability
74ABT74D,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital power supply sequencing, test equipment pattern generation, and legacy bus interface logic requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ABT74D,112 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74ABT series targets high-speed 5 V TTL-compatible logic applications demanding robust timing, latch-up immunity, and partial power-down capability-designed specifically for industrial control, instrumentation, and infrastructure equipment.
FAQ
Does 74ABT74D,112 support mixed-voltage interfacing?
No-it operates strictly at 4.5 V to 5.5 V and accepts only TTL-compatible input levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V). It does not support 3.3 V or 2.5 V logic directly; level translation is required for interfacing with lower-voltage devices.
What happens to outputs during power-down?
When VCC drops to 0 V, the IOFF circuit activates automatically, placing all outputs (Q, Q̅) in a high-impedance state. This prevents reverse current flow from other powered system sections through the device's I/O pins, protecting both the 74ABT74D,112 and connected circuitry.
Can asynchronous set and reset be used simultaneously?
No-asserting both SD and RD LOW simultaneously results in an undefined output state (per Table 3). The device does not guarantee Q or Q̅ behavior in this condition, and outputs may oscillate or settle unpredictably until one input returns HIGH.
Is the SO14 package RoHS-compliant and lead-free?
Yes-74ABT74D,112 in SOT108-1 packaging meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations and halogen-free molding compound, verified per Nexperia's compliance documentation dated January 2024.
74ABT74D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ABT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 4.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 15mA, 20mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 50 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74ABT74D,112 FAQ
1.How can I place an order for 74ABT74D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT74D,112 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 74ABT74D,112 reliable?
The price and inventory of 74ABT74D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT74D,112 is usually 5 days.
3.What payment methods are accepted for 74ABT74D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT74D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT74D,112?
74ABT74D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT74D,112 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 74ABT74D,112?
For technical support, including 74ABT74D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT74D,112 requirements.
6.How does Aetrix verify that 74ABT74D,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT74D,112 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 74ABT74D,112 meets industry standards.
7.What is the process for return or replacement of 74ABT74D,112?
All 74ABT74D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT74D,112, 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 74ABT74D,112 part is unused and in its original packaging.
Return procedure for 74ABT74D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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