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Texas Instruments 74ACT11074DBR
- Part No.:
- 74ACT11074DBR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74ACT11074DBR.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,014
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Product details
Overview
74ACT11074DBR from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent asynchronous preset (PRE) and clear (CLR) inputs, operating at 4.5–5.5 V supply, supporting up to 100 MHz clock frequency, with 5 ns setup time and 8.9 ns max tPLH, used in synchronous logic control and data latching in industrial digital systems.
For engineers reviewing the 74ACT11074DBR datasheet, 74ACT11074DBR pinout, 74ACT11074DBR application, or 74ACT11074DBR equivalent, this page delivers verified functional behavior, SSOP-14 package details, TTL-compatible input thresholds, latch-up immunity, and direct substitution guidance for legacy ACT-family logic design.
Technical Context
The 74ACT11074DBR implements two independent edge-triggered D flip-flops using Texas Instruments' EPIC 1-µm CMOS process, with asynchronous active-low PRE/CLR overriding clocked D-to-Q transfer. Clock triggering occurs at a defined voltage threshold-not dependent on edge slew rate-ensuring robust timing across varying signal rise times.
Each flip-flop supports full rail-to-rail output swing (VOH ≥ 3.94 V @ 4.5 V, VOL ≤ 0.44 V), ±24 mA drive capability, and operates over –40°C to +85°C. Input clamp current is ±20 mA, and typical ICC is 4 µA (static) rising to 1 mA under TTL-level switching conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL/CMOS systems and noise margin against VCC droop. |
| Max Clock Frequency | 100 MHz - enables high-speed state sequencing in counters, shift registers, and pipeline staging. |
| Setup Time (tsu) | 4.5 ns - defines minimum D-input stability window before CLK↑ for reliable sampling at 100 MHz operation. |
| Propagation Delay (tPLH/tPHL) | 1.5–9.6 ns - guarantees sub-10 ns output response from CLK or PRE/CLR, critical for tight-timing control loops. |
| Output Drive | ±24 mA - supports direct fan-out to 10+ LSTTL loads or parallel termination without external buffers. |
| Latch-Up Immunity | 500 mA typical @ 125°C - meets industrial reliability requirements under transient overvoltage or ESD stress. |
| Input Compatibility | TTL-voltage compatible (VIL ≤ 0.8 V, VVIH ≥ 2.0 V) - allows seamless interfacing with legacy 74LS/74F logic without level-shifting. |
Pinout & Package
74ACT11074DBR uses a 14-pin Shrink Small-Outline Package (SSOP-DB), 5.9 mm × 3.9 mm footprint, 0.65 mm lead pitch, 2.0 mm max height, RoHS-compliant NiPdAu finish, MSL Level-1, tape-and-reel packaging (2000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1PRE | Asynchronous preset for first flip-flop - low-active sets Q = H, Q̅ = L regardless of CLK or D. |
| 2 | 1Q | True output of first flip-flop - follows D input on CLK↑ when PRE/CLR inactive. |
| 3 | 1Q̅ | Inverted output of first flip-flop - complementary to 1Q, usable for differential signaling or feedback. |
| 4 | GND | Power ground reference - center-pin placement minimizes high-speed switching noise coupling. |
| 5 | 2Q | True output of second flip-flop - electrically isolated from first section, same timing specs. |
| 6 | 2Q̅ | Inverted output of second flip-flop - supports dual-channel latching with independent control. |
| 7 | 2PRE | Asynchronous preset for second flip-flop - functionally identical to 1PRE, no cross-talk. |
| 8 | 1CLK | Clock input for first flip-flop - positive-edge triggered; voltage-threshold detection decouples timing from edge slope. |
| 9 | 1D | Data input for first flip-flop - sampled on CLK↑ only if PRE/CLR are high; holds value during hold time. |
| 10 | 1CLR | Asynchronous clear for first flip-flop - low-active resets Q = L, Q̅ = H, overriding all other inputs. |
| 11 | VCC | Positive supply - center-pin placement reduces simultaneous switching noise (SSN) in high-frequency operation. |
| 12 | 2CLR | Asynchronous clear for second flip-flop - independent control, no shared internal nodes with first section. |
| 13 | 2D | Data input for second flip-flop - fully isolated path; setup/hold timing identical to 1D. |
| 14 | 2CLK | Clock input for second flip-flop - separate input enables independent clock domains per section. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC 1-µm CMOS Process | Delivers high-speed performance with low static power (4 µA ICC) and 500 mA latch-up immunity at 125°C. |
| Center-Pin VCC/GND | Reduces high-frequency ground bounce and supply noise by symmetric current return paths. |
| TTL-Voltage Compatible Inputs | Eliminates need for external level shifters when interfacing with 74LS, 74F, or microcontroller GPIOs. |
| Independent Asynchronous Controls | Enables per-flip-flop reset/preset without affecting the other channel - essential for fault recovery in dual-path logic. |
| 100 MHz Maximum Clock Rate | Supports real-time data capture in instrumentation, test equipment, and programmable logic glue logic. |
Applications
| Industrial PLC I/O Expansion | Digital Test Equipment Sequencing |
|---|---|
Use Scenario: Expanding discrete input/output points in programmable logic controllers using parallel bus interfaces. IC Role / Device Role / Timing Role: Dual D-flip-flop latches incoming sensor status or actuator commands synchronized to system clock, with independent PRE/CLR for channel-specific fault clearing. Use Value: Enables deterministic state capture at up to 100 MHz, reducing jitter-induced metastability in high-cycle automation cycles. | Use Scenario: Generating precise stimulus patterns and capturing response waveforms in automated test equipment (ATE) platforms. IC Role / Device Role / Timing Role: Serves as a dual-channel sample-and-hold element, where one section clocks data into a pattern register and the other captures pass/fail flags. Use Value: Provides sub-10 ns propagation delay and 4.5 ns setup time, ensuring nanosecond-level timing alignment between stimulus and measurement paths. |
| Legacy System Logic Glue | Motor Control State Register |
Use Scenario: Interfacing mismatched logic families (e.g., 74LS outputs to FPGA inputs) in retrofitted industrial control panels. IC Role / Device Role / Timing Role: Acts as a bidirectional level-tolerant interface buffer with asynchronous reset, synchronizing legacy TTL signals to modern 3.3 V or 5 V digital subsystems. Use Value: TTL-compatible inputs eliminate external pull-ups or translators; 5.5 V absolute max rating protects against bus overvoltage events. | Use Scenario: Holding commutation states for brushless DC motor drivers in embedded motion controllers. IC Role / Device Role / Timing Role: Stores rotor position phase bits (e.g., Hall sensor outputs) and updates them on each commutation clock edge, with PRE/CLR enabling emergency stop override. Use Value: Independent asynchronous controls allow immediate forced state reset without waiting for next clock edge - critical for safe torque shutdown. |
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 |
|---|---|---|---|
| SN74ACT112DR | J-K flip-flop variant with identical pinout, AC specs, and DB package; lacks dedicated D-input but offers toggle/set/reset flexibility. | Suitable where state toggling or gated clocking is required instead of pure D-latching; not drop-in for D-only designs. | Select SN74ACT112DR only if J/K functionality is needed; otherwise, 74ACT11074DBR remains optimal for D-path simplicity and guaranteed setup/hold compliance. |
| 74AC11074M | Same logic function and timing, but in SOIC (D) package (14-pin, 3.9 mm width); higher thermal resistance (1.25 W max vs. 0.5 W for DB). | Better suited for prototyping or low-density boards where SSOP reflow is unavailable; less space-efficient than DB. | Choose 74AC11074M for hand-soldering or legacy PCBs designed for SOIC; 74ACT11074DBR preferred for high-volume, space-constrained industrial modules. |
Compared with SN74ACT112DR and 74AC11074M, the 74ACT11074DBR uniquely combines D-input simplicity, SSOP-14 miniaturization, and guaranteed 100 MHz operation with TTL-compatible inputs - making it the most direct fit for deterministic data capture in compact, noise-sensitive industrial logic.
Availability
74ACT11074DBR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital test equipment sequencing, and legacy system logic glue requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74ACT11074DBR 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 company specializing in analog, embedded processing, and logic solutions, with over 50 years of leadership in industrial-grade logic families.
The 74ACT11074DBR belongs to TI's Advanced CMOS Technology (ACT) logic series, engineered for high-speed, low-noise, TTL-compatible operation in demanding industrial and instrumentation applications.
FAQ
What is the maximum clock frequency supported by the 74ACT11074DBR?
The 74ACT11074DBR supports a maximum clock frequency of 100 MHz under recommended operating conditions (VCC = 4.5–5.5 V, TA = –40°C to +85°C). This is confirmed by timing specifications in the SCAS498A datasheet, where fmax is specified as 100 MHz (min) at 25°C and retains 100 MHz performance across the full temperature range. The 74ACT11074DBR achieves this using TI's EPIC CMOS process and optimized internal gate delays.
Does the 74ACT11074DBR have TTL-compatible inputs?
Yes, the 74ACT11074DBR features TTL-voltage compatible inputs, with VIL ≤ 0.8 V (max) and VIH ≥ 2.0 V (min) across the operating temperature range. This allows direct interfacing with legacy 74LS and 74F logic families without level-shifting circuitry. The specification is explicitly stated in the "Recommended Operating Conditions" table of the SCAS498A datasheet and validated by input clamp current ratings of ±20 mA.
What package type is used for the 74ACT11074DBR?
The 74ACT11074DBR uses a 14-pin Shrink Small-Outline Package (SSOP-DB), measuring 5.9 mm × 3.9 mm with 0.65 mm lead pitch and 2.0 mm maximum height. It is RoHS-compliant, has NiPdAu lead finish, and is supplied in tape-and-reel format (2000 units per reel). Package dimensions and land pattern details are documented in TI's DB0014A drawing and confirmed in the Package Option Addendum dated November 2025.
Can the 74ACT11074DBR operate at 3.3 V supply?
No, the 74ACT11074DBR is not rated for 3.3 V operation. Its recommended supply voltage range is strictly 4.5 V to 5.5 V, and absolute maximum VCC is 6 V. Operation below 4.5 V may result in undefined logic thresholds, increased propagation delay, or failure to meet setup/hold timing. For 3.3 V systems, consider TI's 74LVC11074 or similar LVCMOS-family equivalents instead of the 74ACT11074DBR.
What is the purpose of the center-pin VCC and GND configuration in the 74ACT11074DBR?
The center-pin VCC (Pin 11) and GND (Pin 4) configuration in the 74ACT11074DBR minimizes high-speed switching noise by providing symmetrical current return paths and reducing simultaneous switching output (SSO) noise. This layout lowers ground bounce and supply rail disturbance during fast edge transitions - a key design feature highlighted in the device description and confirmed in TI's EPIC process implementation guidelines for the ACT family.
74ACT11074DBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 14-SSOP (0.209", 5.30mm 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:
- 125 MHz
- Max Propagation Delay @ V, Max CL:
- 8.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 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-SSOP
74ACT11074DBR FAQ
1.How can I place an order for 74ACT11074DBR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT11074DBR 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 74ACT11074DBR reliable?
The price and inventory of 74ACT11074DBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT11074DBR is usually 5 days.
3.What payment methods are accepted for 74ACT11074DBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT11074DBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT11074DBR?
74ACT11074DBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT11074DBR 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 74ACT11074DBR?
For technical support, including 74ACT11074DBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT11074DBR requirements.
6.How does Aetrix verify that 74ACT11074DBR is sourced from the original manufacturer or authorized distributors?
All 74ACT11074DBR 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 74ACT11074DBR meets industry standards.
7.What is the process for return or replacement of 74ACT11074DBR?
All 74ACT11074DBR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT11074DBR, 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 74ACT11074DBR part is unused and in its original packaging.
Return procedure for 74ACT11074DBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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