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Texas Instruments 74ACT16374DL
- Part No.:
- 74ACT16374DL
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16374DL.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,144
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Product details
Overview
74ACT16374DL from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs in a 48-pin shrink small-outline package (SSOP-DL), operating at 4.5–5.5 V, supporting up to 65 MHz clock frequency, 24 mA output drive, and –40°C to 85°C industrial temperature range - used for bidirectional bus driving and I/O port buffering in high-speed digital systems.
For engineers reviewing the 74ACT16374DL datasheet, 74ACT16374DL pinout, 74ACT16374DL application, or 74ACT16374DL equivalent, key selection considerations include its dual 8-bit/16-bit configurable operation, flow-through pinout for PCB layout optimization, distributed VCC/GND pins for noise reduction, and TTL-compatible inputs with 3-state bus-driving capability.
Technical Context
This device implements two independent 8-bit edge-triggered D-type flip-flop sections, each with dedicated clock (CLK), output-enable (OE), and 8-bit data (D) and Q terminals. The positive-edge clock triggering synchronizes data capture, while OE controls high-impedance output states without affecting internal latch operation.
It uses TI's EPIC (Enhanced-Performance Implanted CMOS) 1-µm process, features distributed center-pin VCC and GND configurations to minimize switching noise, and supports flow-through architecture - input pins on one side and corresponding outputs on the opposite side - enabling straight trace routing and reduced signal crosstalk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ACT (Advanced CMOS TTL-compatible), ensuring interoperability with 5 V TTL and CMOS systems |
| Supply Voltage | 4.5–5.5 V - compatible with standard 5 V digital rails and tolerant of typical power rail variation |
| Max Clock Frequency | 65 MHz - supports high-speed data latching in bus interface and register applications |
| Output Drive | ±24 mA - sufficient to drive 50 pF loads at full speed without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 12.4 ns @ 5.5 V - enables tight timing margins in synchronous designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and communications equipment |
| Input Compatibility | TTL-voltage compatible (VIL ≤ 0.8 V, VVIH ≥ 2.0 V) - accepts standard TTL logic levels directly |
Pinout & Package
74ACT16374DL is housed in a 48-pin shrink small-outline package (SSOP-DL), 300-mil body width, 25-mil pin pitch, with gull-wing leads and exposed thermal pad not present - optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable control (active-low) | Independent enable for each 8-bit section; drives all 8 outputs to high-Z when asserted |
| 1CLK, 2CLK | Positive-edge clock input | Triggers simultaneous latching of all 8 D inputs in respective section on rising edge |
| 1D1–1D8, 2D1–2D8 | Data inputs | Asynchronous inputs sampled only on CLK↑; no internal latching between edges |
| 1Q1–1Q8, 2Q1–2Q8 | 3-state true outputs | Reflect latched D values when OE inactive; high-impedance when OE active - eliminates bus contention |
| VCC (Pins 7, 18, 29, 40) | Power supply | Distributed VCC pins reduce IR drop and supply noise across the 16-bit bus |
| GND (Pins 4, 10, 16, 22, 27, 33, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths, critical for clean high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged on opposite sides of package - enables direct layer-to-layer routing and minimizes trace stubs |
| Distributed VCC/GND | Four VCC and eight GND pins interleaved across the package - suppresses simultaneous switching noise (SSN) in 16-bit buses |
| TTL-compatible inputs | Accepts standard 0.8 V / 2.0 V logic thresholds - eliminates need for level-shifting when interfacing with legacy TTL systems |
| 3-state bus-driving outputs | True (non-inverted) outputs with high-impedance state - allows multiple devices to share a common data bus without external isolation |
| EPIC CMOS process | 1-µm implanted CMOS technology - delivers ACT-speed performance with CMOS power efficiency and 500 mA latch-up immunity |
Applications
| Industrial Bus Interface | Memory-Mapped I/O Port |
|---|---|
Use Scenario: Isolating and latching address/data signals between an FPGA and legacy parallel peripheral bus operating at 50+ MHz. IC Role / Device Role / Timing Role: 16-bit registered bus buffer with independent OE control per byte lane - synchronizes asynchronous peripheral access to system clock domain. Use Value: Eliminates external pull-ups and direction-control logic while maintaining signal integrity across 16-bit traces due to flow-through pinout and distributed power pins. |
Use Scenario: Expanding microcontroller GPIO count via parallel I/O expansion in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Bidirectional I/O port register - captures external sensor inputs on CLK↑ and drives actuators via 3-state outputs under software-controlled OE. Use Value: Enables single-cycle read-modify-write operations on 16-bit ports without bus contention, leveraging TTL-compatible inputs for direct connection to industrial sensors. |
| Dual-Channel Data Acquisition Buffer | High-Speed Test Equipment Interface |
Use Scenario: Capturing parallel ADC output streams from two 8-bit converters synchronized to a common sampling clock. IC Role / Device Role / Timing Role: Dual 8-bit edge-triggered latch - samples both converter outputs simultaneously on CLK↑, with independent OE for multiplexed readout. Use Value: Guarantees matched setup/hold timing (tsu = 6.5 ns, th = 1 ns) across all 16 bits, minimizing aperture uncertainty in time-critical acquisition. |
Use Scenario: Interfacing automated test equipment (ATE) pattern generators to DUTs requiring precise 16-bit stimulus vectors at >50 MHz. IC Role / Device Role / Timing Role: High-speed vector register - holds test patterns during DUT evaluation phase, then drives them onto bus with sub-13 ns propagation delay. Use Value: Delivers deterministic timing (tPLH/tPHL ≤ 12.4 ns) and 24 mA drive strength to meet VIH/VIL specs of fast CMOS DUTs without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ACT162244DL | Octal non-inverting 3-state buffer (2 × 8), no clock or storage - purely combinational | Lacks edge-triggered latching; suitable only for transparent bus driving, not registered I/O | Select when synchronous data capture is unnecessary and lower propagation delay (< 6 ns) is prioritized |
| SN74LVCH16374ADL | Lower-voltage 3.3 V operation (1.65–3.6 V), higher ESD rating (±8 kV HBM), but reduced drive (±24 mA @ 3.3 V) | Not 5 V tolerant; requires level translation when interfacing with 5 V systems like 74ACT16374DL | Select for mixed-voltage systems where power efficiency and modern process benefits outweigh 5 V compatibility needs |
Compared with 74ACT16374DL, 74ACT162244DL offers faster propagation but no storage function, while SN74LVCH16374ADL provides 3.3 V compatibility and enhanced robustness at the cost of 5 V interoperability - making 74ACT16374DL the optimal choice for legacy 5 V industrial bus interfaces requiring registered buffering.
Availability
74ACT16374DL is available at Aetrix Electronics and suitable for industrial bus interface, memory-mapped I/O port expansion, and high-speed test equipment interface applications requiring stable component supply, long-term lifecycle support, and consistent SSOP-DL packaging.
Supply support for 74ACT16374DL 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 specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability digital interface components.
The 74ACT16374DL belongs to TI's Widebus™ family - engineered specifically for high-speed, low-noise parallel bus interfacing in industrial, telecom, and computing infrastructure where signal integrity and timing precision are critical.
FAQ
What is the maximum clock frequency supported by the 74ACT16374DL?
The 74ACT16374DL supports a maximum clock frequency of 65 MHz across its full operating temperature range (–40°C to +85°C) and supply voltage range (4.5 V to 5.5 V), as specified in the timing requirements table of the SCAS124B datasheet. This rating applies to both 8-bit sections operating concurrently, with guaranteed setup (6.5 ns) and hold (1 ns) times ensuring reliable data capture at this rate.
Does the 74ACT16374DL support 3.3 V operation?
No, the 74ACT16374DL is rated exclusively for 4.5 V to 5.5 V supply operation and is not characterized for 3.3 V use. Its TTL-compatible input thresholds (VIL ≤ 0.8 V, VVIH ≥ 2.0 V) and output drive specifications assume a 5 V rail. For 3.3 V systems, TI recommends alternatives such as the SN74LVCH16374ADL, which is explicitly designed for 1.65–3.6 V operation.
How many ground pins does the 74ACT16374DL have, and why are they distributed?
The 74ACT16374DL has eight dedicated GND pins (pins 4, 10, 16, 22, 27, 33, 39, 45) distributed across the 48-pin DL package. This configuration minimizes ground inductance and reduces simultaneous switching noise (SSN) during high-speed 16-bit bus transitions - a key design feature documented in the SCAS124B datasheet to maintain signal integrity in dense PCB layouts.
Can the 74ACT16374DL be used as two independent 8-bit registers?
Yes, the 74ACT16374DL contains two fully independent 8-bit D-type flip-flop sections (Section 1: pins 1OE/1CLK/1D1–1D8/1Q1–1Q8; Section 2: pins 2OE/2CLK/2D1–2D8/2Q1–2Q8), each with separate clock and output-enable controls. This allows concurrent or asynchronous operation - for example, latching different data words on separate clocks or enabling only one 8-bit lane onto a shared bus.
What is the meaning of "flow-through architecture" for the 74ACT16374DL?
Flow-through architecture means input pins (e.g., 1D1–1D8, 2D1–2D8) are located on one side of the 48-pin DL package, while corresponding output pins (1Q1–1Q8, 2Q1–2Q8) are placed on the opposite side. As described in the SCAS124B datasheet, this arrangement enables straight, short PCB traces between driver and receiver - reducing crosstalk, stub length, and impedance discontinuities in high-speed parallel bus designs.
74ACT16374DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- 65 MHz
- Max Propagation Delay @ V, Max CL:
- 8.8ns @ 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:
- 4.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
74ACT16374DL FAQ
1.How can I place an order for 74ACT16374DL through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16374DL 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 74ACT16374DL reliable?
The price and inventory of 74ACT16374DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16374DL is usually 5 days.
3.What payment methods are accepted for 74ACT16374DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16374DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16374DL?
74ACT16374DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16374DL 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 74ACT16374DL?
For technical support, including 74ACT16374DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16374DL requirements.
6.How does Aetrix verify that 74ACT16374DL is sourced from the original manufacturer or authorized distributors?
All 74ACT16374DL 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 74ACT16374DL meets industry standards.
7.What is the process for return or replacement of 74ACT16374DL?
All 74ACT16374DL units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16374DL, 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 74ACT16374DL part is unused and in its original packaging.
Return procedure for 74ACT16374DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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