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Texas Instruments 74ACT11374DW
- Part No.:
- 74ACT11374DW
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ACT11374DW.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,279
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Product details
Overview
74ACT11374DW from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs in a 24-pin SOIC (DW) package, operating from 4.5 V to 5.5 V, featuring 24 mA output drive, 55 MHz max clock frequency, and –40°C to 85°C industrial temperature range-designed for bus interface, I/O port buffering, and bidirectional data latching in digital systems.
For engineers reviewing the 74ACT11374DW datasheet, 74ACT11374DW pinout, 74ACT11374DW application, or 74ACT11374DW equivalent, this device delivers TTL-compatible inputs, flow-through PCB layout optimization, center-pin VCC/GND noise reduction, and high-impedance bus isolation without external pull-ups-key for legacy 5 V logic interfacing and industrial control backplanes.
Technical Context
This device implements eight independent positive-edge-triggered D-type flip-flops with synchronous parallel loading and asynchronous 3-state output control via a shared OE input. Each flip-flop captures D-input state on CLK↑ and holds it until the next clock edge, while OE independently places all Q outputs into high-impedance mode without affecting internal latch state.
The 74ACT11374DW uses TI's EPIC (Enhanced-Performance Implanted CMOS) 1-μm process, delivering 500 mA latch-up immunity at 125°C, TTL-voltage-compatible inputs (VIH = 2 V, VIL = 0.8 V), and low-noise center-pin power/ground configuration-enabling robust operation in mixed-signal environments with minimal crosstalk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS systems without level-shifting |
| Max Clock Frequency | 55 MHz - supports high-speed data capture in legacy bus architectures |
| Output Drive | ±24 mA - sufficient to drive 50 pF loads directly, eliminating need for external buffers |
| Propagation Delay | tPLH/tPHL ≤ 12.4 ns - ensures timing margin in 20 ns–cycle synchronous designs |
| 3-State Enable Time | tPZH/tPZL ≤ 13.2 ns - enables fast bus arbitration and multi-master contention management |
| Operating Temperature | –40°C to 85°C - qualified for industrial-grade embedded control and instrumentation |
| Input Compatibility | TTL-level (VIH = 2 V, VIL = 0.8 V) - interoperable with 74LS, 74F, and microcontroller GPIOs |
Pinout & Package
24-pin SOIC (DW) package with 300-mil width, RoHS-compliant green finish (CU NIPDAU), moisture sensitivity level 1 (260°C reflow), and center-aligned VCC (pins 14, 15) and GND (pins 1, 2, 3, 4) for minimized switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 21–24 | GND | Four dedicated ground pins reduce ground bounce and improve signal integrity across all eight channels |
| 14, 15 | VCC | Dual center-placed supply pins lower inductance and stabilize rail voltage during simultaneous output switching |
| 5–12 | 1Q–8Q | True (non-inverted) 3-state outputs - enable direct connection to shared data buses without inversion logic |
| 13 | OE | Active-low output enable - asserts high-impedance on all Q outputs simultaneously, preserving internal latch state |
| 16–23 | 1D–8D | Asynchronous data inputs - accept TTL-compatible levels and feed directly to each flip-flop's D terminal |
| 24 | CLK | Global positive-edge clock - synchronizes all eight flip-flops on rising edge, enabling coherent parallel load |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input (D) and output (Q) pins placed on opposite sides of package - simplifies PCB routing and reduces trace crossovers |
| Center-pin VCC/GND | Dual VCC and quad GND pins centered in package - lowers power distribution inductance and suppresses simultaneous switching noise |
| EPIC CMOS process | 1-μm implanted CMOS technology - provides 500 mA latch-up immunity at 125°C for harsh industrial environments |
| TTL-compatible inputs | VIH = 2 V, VIL = 0.8 V - eliminates need for level translators when interfacing with legacy 74LS or microcontroller outputs |
| Independent OE control | OE does not affect internal flip-flop state - allows data retention or new loading while outputs are tri-stated |
Applications
| Industrial PLC Backplane Interface | Legacy Microcontroller I/O Expansion |
|---|---|
Use Scenario: Interfacing 8-bit parallel data between a main PLC CPU and modular I/O cards over a shared backplane bus. IC Role / Device Role / Timing Role: Acts as a synchronized, 3-state bus latch-capturing CPU writes on CLK↑ and presenting data to I/O modules only when OE is asserted. Use Value: Enables deterministic, noise-immune data transfer using single-cycle strobes and eliminates bus contention via hardware-controlled high-Z isolation. | Use Scenario: Expanding GPIO count of an 8-bit MCU (e.g., 8051 or PIC16) to drive LED arrays, relays, or sensor readouts. IC Role / Device Role / Timing Role: Functions as an output port register-latching MCU data on CLK↑ and driving loads up to 24 mA per channel with TTL-compatible input thresholds. Use Value: Provides direct-drive capability without external transistors or level shifters, reducing BOM count and board area in cost-sensitive embedded designs. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Data Capture |
Use Scenario: Generating precise, synchronized 8-bit stimulus patterns for IC functional testing under controlled clock edges. IC Role / Device Role / Timing Role: Serves as a programmable pattern register-loading test vectors on CLK↑ and holding stable outputs until next update cycle. Use Value: Delivers sub-13 ns propagation delay and 55 MHz clock support, ensuring setup/hold compliance for high-speed DUT interfaces. | Use Scenario: Capturing parallel status signals (e.g., sensor flags, switch states) from a DUT and forwarding them to a host controller. IC Role / Device Role / Timing Role: Operates as an input sampling latch-freezing asynchronous DUT signals on CLK↑ and presenting clean, synchronized data to the host via 3-state bus. Use Value: Eliminates metastability risk through synchronous sampling and supports hot-swappable bus connections via OE-controlled isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ACT11374DWR | Same die and electrical specs; differs only in tape-and-reel packaging (2000 pcs/reel vs. 25 pcs for DW variant) | Identical functional behavior-used interchangeably where volume procurement or automated assembly is required | Select 74ACT11374DWR for production runs; 74ACT11374DW suits prototyping and low-volume evaluation |
| SN74ACT574N | 8-bit transparent D-type latch (not edge-triggered); lacks OE-controlled 3-state but offers identical voltage/current specs | Suitable for level-sensitive data capture (e.g., address latching), not clock-edge-synchronized storage | Choose SN74ACT574N only when asynchronous gating is acceptable; 74ACT11374DW is mandatory for edge-triggered timing control |
Compared with 74ACT11374DWR, the 74ACT11374DW offers identical logic functionality but optimized for small-batch validation; versus SN74ACT574N, it provides critical edge-triggered behavior essential for synchronous bus protocols-making it irreplaceable in clock-domain-coordinated systems.
Availability
74ACT11374DW is available at Aetrix Electronics and suitable for industrial PLC backplanes, legacy microcontroller I/O expansion, and automated test fixture design requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for 74ACT11374DW 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 leader founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The 74ACT11374DW belongs to TI's advanced CMOS (ACT) logic family-engineered for 5 V systems requiring TTL compatibility, high noise immunity, and robust latch-up performance in demanding industrial environments.
FAQ
What is the maximum clock frequency supported by the 74ACT11374DW?
The 74ACT11374DW supports a maximum clock frequency of 55 MHz across its full operating temperature range (–40°C to 85°C). This rating is verified under recommended conditions (VCC = 4.5 V to 5.5 V) and reflects guaranteed timing performance-not typical or best-case values. The 74ACT11374DW achieves this speed while maintaining 3 ns setup and 5.5 ns hold times, making it suitable for high-speed 5 V bus synchronization tasks.
Does the 74ACT11374DW require external pull-up resistors on its 3-state outputs?
No, the 74ACT11374DW does not require external pull-up resistors on its 3-state outputs. Its high-impedance state (Z) presents >1 MΩ off-state impedance, and the outputs are designed to float cleanly when OE is inactive-eliminating bus contention and enabling direct connection to shared lines without passive components. This behavior is confirmed in the function table and electrical characteristics section of the SCAS217A datasheet for the 74ACT11374DW.
Is the 74ACT11374DW pin-compatible with other 74ACT-series octal flip-flops like the 74ACT574?
No, the 74ACT11374DW is not pin-compatible with the 74ACT574. While both are 24-pin SOIC octal D-type devices, the 74ACT11374DW has dedicated D and Q pins on opposite sides (flow-through layout), whereas the 74ACT574 uses a different pinout with shared D/Q bidirectional ports and no separate OE pin. Substituting them requires PCB redesign. The 74ACT11374DW pinout is fixed per the DW package drawing in the SCAS217A datasheet.
What is the purpose of the multiple GND and VCC pins on the 74ACT11374DW?
The 74ACT11374DW features four GND pins (1–4, 21–24) and two VCC pins (14, 15) positioned centrally to minimize power distribution inductance and suppress simultaneous switching noise. This center-pin configuration reduces ground bounce during high-speed 3-state transitions and improves signal integrity across all eight channels-verified in TI's EPIC process characterization and explicitly called out in the SCAS217A datasheet as a key layout optimization.
Can the 74ACT11374DW operate reliably at 4.5 V supply voltage?
Yes, the 74ACT11374DW is fully specified and guaranteed to operate reliably at 4.5 V supply voltage-the minimum of its recommended operating range (4.5 V to 5.5 V). All key parameters-including 24 mA output drive, 55 MHz clock rate, and TTL-compatible input thresholds-are validated at VCC = 4.5 V per the SCAS217A datasheet's recommended operating conditions and electrical characteristics tables.
74ACT11374DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 70 MHz
- Max Propagation Delay @ V, Max CL:
- 11.3ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
74ACT11374DW FAQ
1.How can I place an order for 74ACT11374DW through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT11374DW 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 74ACT11374DW reliable?
The price and inventory of 74ACT11374DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT11374DW is usually 5 days.
3.What payment methods are accepted for 74ACT11374DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT11374DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT11374DW?
74ACT11374DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT11374DW 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 74ACT11374DW?
For technical support, including 74ACT11374DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT11374DW requirements.
6.How does Aetrix verify that 74ACT11374DW is sourced from the original manufacturer or authorized distributors?
All 74ACT11374DW 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 74ACT11374DW meets industry standards.
7.What is the process for return or replacement of 74ACT11374DW?
All 74ACT11374DW units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT11374DW, 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 74ACT11374DW part is unused and in its original packaging.
Return procedure for 74ACT11374DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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