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Texas Instruments 74ACT11374DWR
- Part No.:
- 74ACT11374DWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ACT11374DWR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,119
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Product details
Overview
74ACT11374DWR from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs in a 24-pin SOIC (DW) package. It operates from –40°C to 85°C, supports 5-V supply (4.5–5.5 V), delivers ±24 mA output drive, and features 55 MHz max clock frequency with 3 ns setup/5.5 ns hold timing. It serves as a bus-oriented register for I/O port buffering and bidirectional data latching.
For engineers reviewing the 74ACT11374DWR datasheet, 74ACT11374DWR pinout, 74ACT11374DWR application, or 74ACT11374DWR equivalent, this device is selected for high-speed TTL-compatible bus interfacing where low-noise 3-state control, flow-through layout support, and latch-up immunity (500 mA at 125°C) are critical design requirements.
Technical Context
This device implements eight independent positive-edge-triggered D flip-flops with synchronous parallel loading and asynchronous 3-state output enable (OE). Each flip-flop captures D-input logic on CLK↑ and holds state until next clock edge, while OE independently places all Q outputs in high-impedance without affecting internal storage.
Its EPIC (Enhanced-Performance Implanted CMOS) 1-µm process enables TTL-level input compatibility (VIH = 2 V, VIL = 0.8 V), 107 pF power-dissipation capacitance per flip-flop (outputs enabled), and center-pin VCC/GND configuration to suppress switching noise - key for stable operation in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ACT (Advanced CMOS TTL-compatible) - ensures interoperability with legacy TTL systems without level-shifting. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V digital rails and tolerant of typical power-supply ripple. |
| Max Clock Frequency | 55 MHz - supports high-throughput data capture in bus arbitration and interface synchronization. |
| Output Drive | ±24 mA - sufficient to drive 50-pF loads directly, eliminating need for external buffers in moderate-speed buses. |
| Propagation Delay | tPLH/tPHL ≤ 12.4 ns - ensures predictable timing margins in synchronous 55-MHz operation. |
| 3-State Enable Delay | tPZH/tPLZ ≤ 13.2 ns - guarantees fast bus release and acquisition for time-critical shared-bus protocols. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment. |
Pinout & Package
74ACT11374DWR uses a 24-pin SOIC (DW) package with 300-mil width, JEDEC MO-150 compliant, moisture sensitivity level 1 (260°C reflow unlimited), and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 13–20 | D1–D8 / Q1–Q8 | Eight independent data inputs and true outputs - supports full parallel load and readback of 8-bit registers. |
| 9 | GND | Ground reference for all logic and output stages - dual GND pins (pins 9 & 10) reduce ground bounce. |
| 10 | GND | Second ground pin - part of center-pin GND/VCC configuration minimizing high-speed switching noise. |
| 11 | OE | Active-low 3-state output enable - disables all Q outputs simultaneously without altering internal flip-flop states. |
| 12 | CLK | Global positive-edge clock - synchronizes all eight flip-flops; no internal clock distribution skew. |
| 21–24 | VCC | Power supply - dual VCC pins (21 & 22) provide low-impedance supply path and decoupling stability. |
| 22 | VCC | Second VCC pin - symmetrically placed opposite GND pins to balance current return paths. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | VIH = 2 V, VIL = 0.8 V - eliminates need for input level translators when interfacing with 74LS/74F logic families. |
| Flow-Through Pinout | Inputs on left, outputs on right, clock/enable centered - simplifies PCB routing and reduces trace crosstalk in bus applications. |
| 500-mA Latch-Up Immunity | Rated at 125°C - provides robust fault tolerance against transient overvoltage or ESD-induced parasitic thyristor activation. |
| Center-Pin Power/Ground | VCC (pins 21–22) and GND (pins 9–10) centrally located - lowers simultaneous switching noise (SSN) by shortening current loop area. |
| EPIC Process Technology | 1-µm implanted CMOS - delivers ACT speed/power balance with proven reliability across industrial temperature range. |
Applications
| Industrial PLC I/O Module | Legacy Bus Interface Adapter |
|---|---|
|
Use Scenario: Isolating and latching sensor/actuator signals in programmable logic controller backplanes with shared 8-bit data buses. IC Role / Device Role / Timing Role: Acts as an 8-bit input capture register synchronized to system clock, with OE enabling dynamic bus sharing between CPU and peripheral modules. Use Value: Enables deterministic sampling of 8-channel analog/digital inputs at up to 55 MHz, while 3-state outputs prevent bus contention during CPU read cycles. |
Use Scenario: Bridging modern microcontrollers to legacy ISA or VMEbus peripherals requiring TTL-compatible 8-bit latched data transfer. IC Role / Device Role / Timing Role: Provides edge-triggered, noise-immune data staging between mismatched voltage domains and timing protocols. Use Value: Eliminates external pull-ups and bus transceivers by delivering ±24 mA drive and TTL-compatible thresholds directly on-chip. |
| Test Equipment Digital Pattern Generator | Automated Test Fixture Control |
|
Use Scenario: Generating precise, synchronized 8-bit stimulus waveforms for IC functional testing under controlled clock edges. IC Role / Device Role / Timing Role: Functions as a programmable pattern latch - D inputs loaded in parallel, then released synchronously on CLK↑ to drive DUT pins. Use Value: Achieves sub-13 ns output transition timing consistency across all 8 bits, critical for setup/hold compliance in high-speed test vectors. |
Use Scenario: Controlling relay banks, LED indicators, or solenoid drivers in manufacturing test fixtures where multiple devices share a common data bus. IC Role / Device Role / Timing Role: Serves as a buffered, tri-stateable output expander - OE allows sequential activation of fixture subsystems without bus conflicts. Use Value: Reduces fixture wiring complexity by enabling single-bus control of 8 independent actuators with guaranteed high-Z isolation between operations. |
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 |
|---|---|---|---|
| SN74ACT574N | 8-bit transparent D-type latch (not edge-triggered); identical ACT family specs, same 24-pin PDIP package. | Lacks clock-edge synchronization - requires gated clock or external edge detection for register behavior. | Select when level-sensitive latching suffices and board space permits through-hole mounting. |
| 74ACT374SCX | Same functionality and timing, but in 20-pin SOIC (smaller footprint); lower max fclock (50 MHz vs. 55 MHz). | Reduced pin count limits I/O flexibility - no separate D/Q pin pairing; shared bus direction control not supported. | Choose for space-constrained designs where 5-MHz margin is acceptable and pin multiplexing is tolerable. |
Compared with SN74ACT574N and 74ACT374SCX, the 74ACT11374DWR uniquely combines true edge-triggered operation, full D/Q separation, and 24-pin SOIC layout optimized for flow-through routing - making it preferred for high-integrity bus register applications demanding precise timing and minimal layout overhead.
Availability
74ACT11374DWR is available at Aetrix Electronics and suitable for industrial automation, legacy bus interfacing, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74ACT11374DWR 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 founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The 74ACT11374DWR belongs to TI's Advanced CMOS (ACT) logic family, engineered for TTL-compatible performance in industrial control, instrumentation, and bus interface systems where noise immunity, timing precision, and long-term availability are essential.
FAQ
What is the maximum operating frequency of the 74ACT11374DWR?
The 74ACT11374DWR is rated for a maximum clock frequency of 55 MHz across the full operating temperature range (–40°C to +85°C), as specified in the timing requirements table of the SCAS217A datasheet. This value reflects guaranteed performance under recommended conditions (VCC = 4.5–5.5 V), with typical operation reaching 70 MHz at 25°C. The 74ACT11374DWR achieves this using TI's EPIC CMOS process and optimized flow-through architecture.
Does the 74ACT11374DWR support 3.3-V operation?
No, the 74ACT11374DWR is designed exclusively for 5-V operation with a recommended supply range of 4.5 V to 5.5 V. Its TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and output drive characteristics are specified only within this range. Applying 3.3 V violates the recommended operating conditions and may result in undefined logic levels, reduced noise margin, or failure to meet timing specifications. For 3.3-V systems, consider TI's LVC or AHC logic families instead of the 74ACT11374DWR.
How does the output-enable (OE) pin affect internal flip-flop operation in the 74ACT11374DWR?
The OE pin in the 74ACT11374DWR controls only the output buffer stage and has no effect on internal flip-flop state retention or clocked data capture. When OE is asserted (low), Q outputs enter high-impedance; when deasserted (high), Q outputs reflect the current stored logic levels. Data can be loaded via CLK↑ or retained indefinitely regardless of OE state - enabling seamless bus arbitration without disrupting register contents. This behavior is explicitly confirmed in the functional description and truth table of the 74ACT11374DWR datasheet.
What package type and dimensions does the 74ACT11374DWR use?
The 74ACT11374DWR uses a 24-pin SOIC (DW) package per JEDEC MO-150, measuring 15.4 mm × 7.5 mm × 2.35 mm (length × width × height), with 300-mil body width and 1.27-mm lead pitch. It ships in tape-and-reel format (2000 units/reel), reel diameter 330 mm, reel width 24.4 mm, and pin one located in quadrant Q1. This DW package is distinct from the DB (SSOP) and NT (PDIP) variants also offered for the 74ACT11374 family.
Is the 74ACT11374DWR pin-compatible with other 74ACT-series octal flip-flops?
The 74ACT11374DWR shares the same 24-pin DW SOIC footprint and pinout as the 74ACT11374DW, 74ACT11374DWE4, and 74ACT11374DWG4 variants - differing only in marking, packaging, and eco-plan compliance. However, it is not pin-compatible with functionally similar parts like the 74ACT374 (20-pin) or 74ACT574 (20-pin PDIP), which use different pin counts and assignments. Always verify pin mapping against the DW-package top-view diagram in the SCAS217A datasheet before substituting the 74ACT11374DWR.
74ACT11374DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
74ACT11374DWR FAQ
1.How can I place an order for 74ACT11374DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT11374DWR 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 74ACT11374DWR reliable?
The price and inventory of 74ACT11374DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT11374DWR is usually 5 days.
3.What payment methods are accepted for 74ACT11374DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT11374DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT11374DWR?
74ACT11374DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT11374DWR 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 74ACT11374DWR?
For technical support, including 74ACT11374DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT11374DWR requirements.
6.How does Aetrix verify that 74ACT11374DWR is sourced from the original manufacturer or authorized distributors?
All 74ACT11374DWR 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 74ACT11374DWR meets industry standards.
7.What is the process for return or replacement of 74ACT11374DWR?
All 74ACT11374DWR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT11374DWR, 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 74ACT11374DWR part is unused and in its original packaging.
Return procedure for 74ACT11374DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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