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Texas Instruments 74AC11074DE4
- Part No.:
- 74AC11074DE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AC11074DE4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
74AC11074DE4 from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent preset and clear inputs, operating from –40°C to 85°C at VCC = 3–5.5 V. It delivers 125 MHz max clock frequency at 5 V, 3.5 ns setup time, and ±24 mA output drive. Used in synchronous logic control, state machines, and data latching in industrial control panels.
For engineers reviewing the 74AC11074DE4 datasheet, 74AC11074DE4 pinout, 74AC11074DE4 application, or 74AC11074DE4 equivalent, key selection criteria include edge-triggered behavior, asynchronous PRE/CLR assertion, guaranteed hold-time zero, and EPIC™ process latch-up immunity of 500 mA at 125°C.
Technical Context
This device implements two independent D-type flip-flops sharing no internal coupling-each with dedicated PRE, CLR, CLK, D, Q, and Q̅ terminals. Clock triggering responds to voltage threshold crossing, not edge slew rate, enabling robust operation across varying signal rise times.
It uses Texas Instruments' EPIC™ 1-µm CMOS process, delivering low-noise switching via center-pin VCC/GND configuration and supporting rail-to-rail input/output swing within 0–VCC bounds. Absolute maximum ratings include ±50 mA output clamp current and –0.5 V to 7 V supply tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | Advanced CMOS (AC), compatible with TTL input thresholds and CMOS output drive levels |
| Max Clock Frequency | 125 MHz at VCC = 5 V - supports high-speed synchronous logic in digital controllers |
| Setup Time (tsu) | 3.5 ns at VCC = 5 V - enables tight timing margins in pipeline stages |
| Output Drive | ±24 mA at VCC = 5 V - directly drives multiple TTL loads or small PCB traces without buffering |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments without derating |
| Latch-Up Immunity | 500 mA typical at 125°C - ensures reliability under transient overcurrent stress |
| Power Dissipation Cap | 1.1 W (N package) - defines thermal design limits for continuous operation in enclosed enclosures |
Pinout & Package
74AC11074DE4 is supplied in a 14-pin plastic DIP (N package), 300-mil width, with through-hole mounting and center-pin VCC (pin 14) and GND (pin 7) layout to minimize high-speed switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1PRE, 2PRE | Asynchronous preset input (active-low) | Forces Q = H / Q̅ = L independently of clock; overrides D and CLK when asserted |
| 1CLR, 2CLR | Asynchronous clear input (active-low) | Forces Q = L / Q̅ = H independently of clock; overrides D and CLK when asserted |
| 1CLK, 2CLK | Positive-edge clock input | Transfers D-state to Q on low-to-high transition; threshold-triggered, not slew-dependent |
| 1D, 2D | Data input | Held stable ≥3.5 ns before CLK↑ to guarantee correct capture at 5 V supply |
| 1Q, 2Q | True output | Complementary to Q̅; capable of sourcing/sinking ±24 mA at VCC = 5 V |
| 1Q̅, 2Q̅ | Inverted output | Provides logical complement of Q; usable as feedback or differential signaling pair |
| VCC (Pin 14) | Positive supply | Center-pin placement reduces ground bounce and supply noise coupling in high-frequency operation |
| GND (Pin 7) | Ground reference | Center-pin placement provides symmetrical return path for both flip-flop sections |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous control | Preset and clear operate independently of clock edge, enabling immediate state initialization or reset |
| Threshold-based clocking | CLK triggering occurs at defined voltage level-not dependent on rise time-improving jitter tolerance |
| EPIC™ process integration | 1-µm CMOS fabrication yields low power, high noise immunity, and 500-mA latch-up resistance |
| Center-pin VCC/GND | Reduces simultaneous switching noise by balancing supply/return paths across the IC body |
| Rail-to-rail I/O | Inputs accept 0–VCC; outputs swing full rail, ensuring interoperability with TTL and mixed-voltage systems |
Applications
| Industrial PLC Logic Modules | Digital Test Equipment Sequencers |
|---|---|
Use Scenario: Storing intermediate states during cyclic scan execution in programmable logic controllers. IC Role / Device Role / Timing Role: Dual D-flip-flop providing synchronized register storage with independent reset per channel. Use Value: Asynchronous PRE/CLR allows deterministic startup and fault recovery without waiting for clock alignment. |
Use Scenario: Generating precise multi-step stimulus patterns in automated test equipment timing engines. IC Role / Device Role / Timing Role: Edge-triggered latch capturing pattern data on each clock cycle with zero hold-time requirement. Use Value: 3.5 ns setup time at 5 V enables reliable operation up to 125 MHz, matching high-speed ATE clock domains. |
| Communications Frame Synchronizers | Legacy Bus Interface Glue Logic |
Use Scenario: Aligning incoming serial frame boundaries to local clock domain in protocol translators. IC Role / Device Role / Timing Role: Dual-register stage detecting start-of-frame markers and holding sync state across clock domains. Use Value: Independent Q/Q̅ outputs support both true and inverted framing signals without external inverters. |
Use Scenario: Interfacing microcontrollers to parallel peripherals (e.g., LCDs, ADCs) requiring handshake synchronization. IC Role / Device Role / Timing Role: Synchronizing strobe and data valid signals using edge-triggered capture and asynchronous reset. Use Value: TTL-compatible inputs and ±24 mA drive eliminate level-shifter components in 5 V legacy system designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC74N | Dual D-flip-flop with same AC family specs but no dedicated PRE/CLR per section - shares common set/reset | Lacks independent asynchronous control per flip-flop; unsuitable where isolated reset is required | Select 74AC11074DE4 when per-channel preset/clear is mandatory for fault containment or modular state management |
| 74ACT109N | JK flip-flop variant with identical pinout and AC speed, but JK functionality instead of D-type | Requires different control logic mapping; cannot substitute directly in D-input designs without gate rework | Choose 74AC11074DE4 for pure D-latch behavior with minimal external logic; avoid ACT109 unless JK function is explicitly needed |
Compared with SN74AC74N and 74ACT109N, the 74AC11074DE4 uniquely provides fully independent PRE/CLR per flip-flop in a standard 14-pin DIP, enabling modular state control without shared reset propagation or functional conversion overhead.
Availability
74AC11074DE4 is available at Aetrix Electronics and suitable for industrial PLC logic modules, digital test equipment sequencers, and legacy bus interface glue logic requiring stable component supply across extended product lifecycles.
Supply support for 74AC11074DE4 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 U.S.-based semiconductor innovator founded in 1930, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74AC11074DE4 belongs to TI's legacy AC logic family, designed for high-speed, low-power, TTL-compatible digital interfacing in industrial control and instrumentation systems.
FAQ
What is the maximum clock frequency supported by the 74AC11074DE4?
The 74AC11074DE4 supports up to 125 MHz maximum clock frequency when operated at VCC = 5 V ± 0.5 V and TA = 25°C. At VCC = 3.3 V, the rated maximum drops to 100 MHz. These values are measured under specified load conditions (CL = 50 pF) and reflect guaranteed performance across the commercial temperature range.
Does the 74AC11074DE4 require external pull-up resistors on PRE and CLR inputs?
No, the 74AC11074DE4 does not require external pull-up resistors on PRE or CLR inputs. Its CMOS inputs have low leakage (±1 µA max), and internal design allows direct connection to VCC for inactive-high operation. Pull-ups are only needed if driving from open-collector sources or long traces susceptible to noise.
Can the 74AC11074DE4 be used in mixed-voltage systems with 3.3 V logic?
Yes, the 74AC11074DE4 operates down to VCC = 3 V and accepts input voltages compliant with TTL thresholds (VIH ≥ 2.1 V at 3 V supply). Its outputs swing rail-to-rail, making it interoperable with 3.3 V CMOS receivers when VCC = 3.3 V, though output drive strength reduces proportionally versus 5 V operation.
What is the purpose of the center-pin VCC and GND configuration in the 74AC11074DE4 N-package?
The center-pin VCC (pin 14) and GND (pin 7) layout in the 74AC11074DE4 N-package minimizes high-speed switching noise by equalizing inductance in supply and return paths. This symmetric placement reduces ground bounce and supply droop during simultaneous output transitions, improving signal integrity in dense logic layouts.
Is the 74AC11074DE4 pin-compatible with older 74LS or 74HC series D-flip-flops?
No, the 74AC11074DE4 is not pin-compatible with standard 74LS74 or 74HC74 devices. While all are 14-pin dual D-flip-flops, the 74AC11074DE4 assigns PRE/CLR to pins 1/2 and 13/12 respectively, whereas LS74/HC74 locate them at pins 4/12 and 5/13. Direct replacement requires PCB redesign.
74AC11074DE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 3V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74AC11074DE4 FAQ
1.How can I place an order for 74AC11074DE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC11074DE4 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 74AC11074DE4 reliable?
The price and inventory of 74AC11074DE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC11074DE4 is usually 5 days.
3.What payment methods are accepted for 74AC11074DE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC11074DE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC11074DE4?
74AC11074DE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC11074DE4 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 74AC11074DE4?
For technical support, including 74AC11074DE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC11074DE4 requirements.
6.How does Aetrix verify that 74AC11074DE4 is sourced from the original manufacturer or authorized distributors?
All 74AC11074DE4 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 74AC11074DE4 meets industry standards.
7.What is the process for return or replacement of 74AC11074DE4?
All 74AC11074DE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AC11074DE4, 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 74AC11074DE4 part is unused and in its original packaging.
Return procedure for 74AC11074DE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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