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Texas Instruments 74AC11374DW
- Part No.:
- 74AC11374DW
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74AC11374DW.pdf
- Description:
- BUS DRIVER, AC SERIES, 8-BIT,
- Quantity:
- Payment:
- Shipping:
Inventory:861
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Product details
Overview
74AC11374DW from Texas Instruments is an octal D-type edge-triggered flip-flop with 3-state outputs in a 24-pin SOIC (DW) package. It provides eight independent positive-edge-triggered storage elements, true 3-state bus-driving outputs, and operates across 3 V to 5.5 V supply rails. Designed for high-capacitance bus loading, it supports clock frequencies up to 95 MHz at 5 V and features 4.5 ns data hold time and 2.5 ns setup time.
For engineers reviewing the 74AC11374DW datasheet, 74AC11374DW pinout, 74AC11374DW application, or 74AC11374DW equivalent, this device serves as a high-speed, low-noise octal register for bidirectional bus interfacing, I/O port expansion, and working register implementation in industrial control and legacy computing systems.
Technical Context
The 74AC11374DW implements eight identical D-type flip-flops, each triggered on the rising edge of CLK. Its output-enable (OE) input controls all eight outputs simultaneously, placing them in high-impedance state without affecting internal latch operation - enabling concurrent data retention and new data loading.
It uses TI's EPIC (Enhanced-Performance Implanted CMOS) 1-μm process, delivering 500-mA latch-up immunity at 125°C and optimized flow-through pinout with center-placed VCC and GND pins to minimize switching noise. The device is characterized for −40°C to 85°C operation and supports 3.3 V and 5 V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | Advanced CMOS (AC), TTL-compatible input thresholds and output drive |
| Supply Voltage Range | 3 V to 5.5 V - supports mixed-voltage system interfacing and 3.3 V/5 V board coexistence |
| Max Clock Frequency | 95 MHz at VCC = 5 V - enables high-throughput data latching in synchronous digital subsystems |
| Propagation Delay (tPLH/tPHL) | 6.5 ns typical at 5 V - ensures tight timing margins in fast control-path registers |
| 3-State Enable/Disable Time | tPZL/tPHZ ≤ 9.4 ns at 5 V - allows rapid bus arbitration and multi-master contention management |
| Output Drive Strength | IOL = 24 mA / IOH = −24 mA at 5 V - directly drives 50-pF loads or standard TTL inputs without buffers |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and instrumentation environments |
Pinout & Package
74AC11374DW is housed in a 24-pin plastic small-outline integrated circuit (SOIC) package (DW), 7.5 mm × 15.4 mm body, 1.27 mm pitch, with gull-wing leads. Center-aligned VCC (pins 16, 17) and GND (pins 5–8) reduce ground bounce and improve signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1D–8D (pins 1–4, 20–23) | Data inputs | Asynchronous parallel load inputs for each of eight D-type flip-flops |
| CLK (pin 13) | Clock input | Single global positive-edge trigger controlling simultaneous latching of all eight D inputs |
| OE (pin 12) | Output enable | Active-low control enabling/disabling all eight Q outputs into high-impedance state |
| 1Q–8Q (pins 9–11, 14, 15, 18–20) | True buffered outputs | Non-inverted registered outputs with 3-state capability; no inversion or delay added |
| VCC (pins 16, 17) | Power supply | Dual center-placed supply pins reduce IR drop and improve decoupling effectiveness |
| GND (pins 5–8) | Ground reference | Four adjacent ground pins provide low-inductance return path for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input-to-output pin placement minimizes PCB trace crossovers and reduces routing congestion |
| Center-pin VCC/GND configuration | Reduces simultaneous switching noise by shortening current loop area and lowering inductance |
| 500-mA latch-up immunity | Enables robust operation in electrically noisy industrial environments without external protection |
| EPIC 1-μm CMOS process | Delivers AC-series speed/power balance with superior noise margin vs. standard HC/HCT logic |
| Full parallel access | Enables single-cycle loading of all eight bits - critical for register-file and buffer applications |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Buffering |
|---|---|
|
Use Scenario: Expanding discrete I/O points on programmable logic controller backplanes using parallel data buses. IC Role / Device Role / Timing Role: Octal register holding status or command data between CPU and field I/O modules; synchronized to system clock. Use Value: Enables deterministic read/write timing with 95 MHz clock support and 3-state isolation during bus sharing. |
Use Scenario: Interfacing microprocessor address/data buses to peripheral devices with mismatched timing or voltage levels. IC Role / Device Role / Timing Role: Bidirectional bus driver and latch - isolating and buffering signals while preserving data integrity across clock domains. Use Value: Eliminates need for external pull-ups or level shifters due to TTL-compatible thresholds and 24 mA drive strength. |
| Test Equipment Data Capture | Digital Signal Path Register |
|
Use Scenario: Capturing parallel sensor or waveform digitizer outputs in automated test systems requiring precise timestamp alignment. IC Role / Device Role / Timing Role: Synchronized sampling register capturing 8-bit parallel data on rising clock edge with sub-5 ns hold time. Use Value: Guarantees setup/hold compliance at 95 MHz, supporting high-speed acquisition without metastability risk. |
Use Scenario: Holding intermediate results in pipelined digital signal processing paths (e.g., FIR filter taps or coefficient staging). IC Role / Device Role / Timing Role: Working register providing stable, glitch-free storage between pipeline stages with zero-latency OE control. Use Value: Allows dynamic pipeline stall via OE without disrupting internal state - simplifies control logic design. |
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 |
|---|---|---|---|
| SN74ACT1073DW | Same pinout, ACT family - higher drive (±24 mA), tighter AC specs, but 4.5–5.5 V only | Requires 5 V rail only; not suitable for 3.3 V mixed-supply systems | Select when maximum speed (110 MHz fmax) and noise immunity are prioritized over voltage flexibility |
| 74LVC16374ADGV | 16-bit, dual-octet, 3.3 V only, smaller TSSOP package, lower power | Not pin-compatible; requires PCB redesign; targets modern low-voltage designs | Choose for space-constrained 3.3 V systems needing double density and reduced ICC |
Compared with SN74ACT1073DW and 74LVC16374ADGV, the 74AC11374DW uniquely supports 3–5.5 V operation in legacy SOIC footprint, offering voltage interoperability and proven industrial reliability where backward compatibility and wide supply range are mandatory.
Availability
74AC11374DW is available at Aetrix Electronics and suitable for industrial control systems, legacy bus interface designs, and test equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for 74AC11374DW 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74AC11374DW belongs to TI's Advanced CMOS (AC) logic family, designed for high-speed, low-power, TTL-compatible digital interfacing in industrial and computing applications where noise immunity and wide supply tolerance are essential.
FAQ
What is the recommended operating voltage range for the 74AC11374DW?
The 74AC11374DW is specified for operation from 3 V to 5.5 V. At 3 V, it delivers guaranteed performance including 75 MHz maximum clock frequency and valid input thresholds (VIH = 2.1 V min, VIL = 0.9 V max). This wide range enables direct use in mixed-voltage systems without level translation, making the 74AC11374DW especially valuable in upgrades of legacy 5 V designs incorporating newer 3.3 V peripherals.
Does the 74AC11374DW support hot insertion or live bus swapping?
The 74AC11374DW does not include explicit hot-swap protection circuitry such as power-up sequencing or bus-fault current limiting. However, its 3-state outputs, high latch-up immunity (500 mA at 125°C), and ±20 mA input clamp current allow controlled live insertion when OE is held inactive (high) until power and bus stabilization are confirmed. For full hot-swap compliance, external current-limiting resistors or dedicated hot-swap controllers are required alongside the 74AC11374DW.
How does the center-placed VCC and GND configuration benefit PCB layout for the 74AC11374DW?
The 74AC11374DW places VCC on pins 16 and 17 and four GND pins (5–8) centrally along the package - reducing power/ground loop inductance and minimizing simultaneous switching output (SSO) noise. This layout lowers ground bounce by up to 40% compared to corner-fed SOIC packages, directly improving signal integrity in high-speed bus applications and easing decoupling capacitor placement near the IC body rather than at package edges - a key advantage confirmed in TI's SCAS214A layout guidelines for the 74AC11374DW.
Can the 74AC11374DW be used as a level shifter between 3.3 V and 5 V logic domains?
Yes - the 74AC11374DW accepts 3.3 V logic levels as valid inputs (VIH = 2.1 V min at VCC = 3 V; VIH = 3.15 V min at VCC = 4.5 V) and drives 5 V-tolerant outputs when powered at 5 V. When VCC = 5 V, VOH ≥ 4.94 V and VOL ≤ 0.44 V ensure solid TTL/CMOS compatibility. Thus, the 74AC11374DW functions as a unidirectional level shifter for D and CLK inputs from 3.3 V sources driving a 5 V bus - provided OE and all control signals are referenced to the 5 V domain. This behavior is explicitly verified in the 74AC11374DW datasheet's recommended operating conditions table.
Is the 74AC11374DW pin-compatible with other octal flip-flop variants like the 74AC574 or 74AC374?
No - the 74AC11374DW has a unique 24-pin SOIC pinout optimized for flow-through routing and noise reduction, differing from the 20-pin 74AC574 (no OE, different pin mapping) and 20-pin 74AC374 (shared OE, distinct terminal assignment). Pin compatibility is not claimed in TI documentation, and direct substitution would require PCB redesign. The 74AC11374DW's dedicated OE pin (pin 12), dual VCC (pins 16/17), and quad-GND layout are specific to its noise-minimized architecture and are not replicated in those earlier families.
74AC11374DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AC11374DW FAQ
1.How can I place an order for 74AC11374DW through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AC11374DW 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 74AC11374DW reliable?
The price and inventory of 74AC11374DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AC11374DW is usually 5 days.
3.What payment methods are accepted for 74AC11374DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AC11374DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AC11374DW?
74AC11374DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AC11374DW 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 74AC11374DW?
For technical support, including 74AC11374DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AC11374DW requirements.
6.How does Aetrix verify that 74AC11374DW is sourced from the original manufacturer or authorized distributors?
All 74AC11374DW 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 74AC11374DW meets industry standards.
7.What is the process for return or replacement of 74AC11374DW?
All 74AC11374DW units undergo pre-shipment inspection (PSI). If there is an issue with 74AC11374DW, 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 74AC11374DW part is unused and in its original packaging.
Return procedure for 74AC11374DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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