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Texas Instruments 74ACT16374DLRG4
- Part No.:
- 74ACT16374DLRG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16374DLRG4.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
74ACT16374DLRG4 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 65 MHz clock frequency, 6.5 ns data setup time, and ±24 mA output drive - used for bidirectional bus driving and I/O port buffering in industrial control backplanes.
For engineers reviewing the 74ACT16374DLRG4 datasheet, 74ACT16374DLRG4 pinout, 74ACT16374DLRG4 application, or 74ACT16374DLRG4 equivalent, this device serves as a high-speed, TTL-voltage-compatible latch with flow-through architecture and distributed VCC/GND pins to minimize switching noise in dense PCB layouts.
Technical Context
The 74ACT16374DLRG4 implements two independent 8-bit D-type flip-flop sections, each with separate clock (CLK) and output-enable (OE) controls, enabling synchronous latching and tri-state bus management without affecting internal state during output disable. Its EPIC (Enhanced-Performance Implanted CMOS) 1-µm process delivers 500-mA latch-up immunity at 125°C.
It features true 3-state outputs with fast enable/disable timing (tPZH = 5.4 ns typ, tPZL = 4.4 ns typ), TTL-compatible inputs (VIH = 2 V min, VIL = 0.8 V max), and dual VCC/GND pin pairs per side to reduce ground bounce and supply noise during high-speed transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ACT (Advanced CMOS TTL-compatible), 5-V only operation |
| Function | 16-bit edge-triggered D-type flip-flop with independent 3-state control per 8-bit section |
| Max Clock Frequency | 65 MHz - supports high-speed data capture in bus interface applications |
| Propagation Delay (tPLH/tPHL) | 5.1–12.4 ns - ensures tight timing margins in synchronous systems |
| Output Drive | ±24 mA - sufficient to drive 50-pF loads or standard TTL/CMOS buses directly |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems |
| Package | 48-pin SSOP (DL), 300-mil width, 25-mil pin pitch - space-efficient for high-I/O-density designs |
Pinout & Package
74ACT16374DLRG4 is housed in a 48-pin shrink small-outline package (SSOP-DL) with 300-mil body width and 25-mil center-to-center pin spacing. Pin 1 is located in quadrant Q1 per tape-and-reel orientation; package includes eight dedicated VCC and eight GND pins distributed across both sides for low-inductance power delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Section output-enable inputs | Active-low control per 8-bit section; enables high-impedance state without affecting internal latch state |
| 1CLK, 2CLK | Positive-edge clock inputs | Synchronizes data capture on rising edge; independent clocks allow staggered or split-bus operation |
| 1D1–1D8, 2D1–2D8 | Data inputs | 16 total TTL-compatible inputs accepting 0.8 V / 2 V logic thresholds |
| 1Q1–1Q8, 2Q1–2Q8 | True 3-state outputs | Drive high/low or float; no pull-ups required in bus-organized systems |
| VCC (Pins 7, 18, 30, 39, 42, 45, 47, 48) | Power supply | Distributed VCC pins reduce IR drop and supply noise across 16-bit bus |
| GND (Pins 4, 10, 16, 22, 25, 28, 34, 41) | Ground reference | Eight GND pins minimize ground bounce during simultaneous output switching |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input-to-output signal path aligned across package width - simplifies layer routing and reduces trace length mismatch |
| Distributed VCC/GND | Eight VCC and eight GND pins placed symmetrically - lowers impedance of power delivery network by >40% vs. single-rail SSOP |
| TTL-voltage compatibility | Inputs accept standard TTL logic levels (0.8 V / 2.0 V) while operating from 5-V supply - eliminates level-shifter requirements |
| High latch-up immunity | 500 mA typical at 125°C - meets stringent reliability requirements for industrial and telecom infrastructure |
| EPIC process technology | 1-µm implanted CMOS - delivers ACT speed/power balance with robust ESD tolerance (≥2 kV HBM) |
Applications
| Industrial Backplane Bus Interface | Programmable Logic Controller (PLC) I/O Module |
|---|---|
Use Scenario: Bidirectional data transfer between CPU module and peripheral expansion slots in modular automation chassis. IC Role / Device Role / Timing Role: 16-bit registered bus transceiver providing synchronized input sampling and controlled output driving under real-time OS scheduling. Use Value: Flow-through pinout and distributed power pins reduce signal skew and ground bounce across 16-bit parallel bus, improving timing margin by ≥1.8 ns. |
Use Scenario: Isolating and latching field I/O signals (digital inputs/outputs) in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Input register capturing sensor status on clock edge; output register driving actuators via OE-controlled 3-state buffers. Use Value: Independent 8-bit OE control allows selective activation of input vs. output banks, enabling half-duplex I/O sharing on same physical connector. |
| Test Equipment Digital Pattern Generator | Legacy System Memory Address Latch |
Use Scenario: Generating precise, synchronized stimulus waveforms for IC functional testing using pattern memory and timing controller. IC Role / Device Role / Timing Role: High-speed data latch staging parallel test vectors from SRAM into driver stage; CLK and OE timed to match pattern clock domain. Use Value: 65 MHz max clock and 6.5 ns setup time support 15.4 ns minimum pattern period - sufficient for 64-MHz digital test vectors. |
Use Scenario: Capturing and holding upper address bits during multiplexed bus cycles in 80x86-based industrial controllers. IC Role / Device Role / Timing Role: Address latch freezing A16–A31 during AD bus demultiplexing; OE tied low to maintain constant output drive. Use Value: ±24 mA drive strength ensures reliable logic levels into multiple TTL loads (fan-out ≥10), eliminating need for external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered bus interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ACT16244DLR | Non-latching 16-bit 3-state buffer (no clock or storage); identical DL package and pinout except missing CLK/OE per section | Used where data pass-through (not edge-triggered capture) is required; no timing control needed | Select when system uses external clocking or requires transparent buffering instead of registered hold |
| SN74LVC16374ADGGR | 3.3-V only, 1.65–3.6 V supply range; lower drive (±24 mA), same 48-pin TSSOP package but different pin mapping (no distributed VCC/GND) | Targets modern low-voltage mixed-signal systems; incompatible with 5-V buses without level translation | Choose for new 3.3-V designs requiring LVCMOS compatibility and lower power; not drop-in for 5-V ACT systems |
Compared with 74ACT16374DLRG4, the 74ACT16244DLR offers simpler bus buffering without storage, while the SN74LVC16374ADGGR provides voltage scalability at the cost of 5-V interoperability and noise-immune power layout - making the 74ACT16374DLRG4 optimal for legacy 5-V industrial backplanes requiring robust timing and noise resilience.
Availability
74ACT16374DLRG4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, programmable logic controller I/O modules, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ACT16374DLRG4 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 74ACT16374DLRG4 belongs to TI's Widebus™ family of high-speed bus-interface logic, designed specifically for noise-resilient, high-density PCB implementations in industrial control and instrumentation systems.
FAQ
What is the operating voltage range for the 74ACT16374DLRG4?
The 74ACT16374DLRG4 operates over a supply voltage range of 4.5 V to 5.5 V. It is not rated for 3.3-V or mixed-voltage operation. Operation outside this range may cause functional failure or permanent damage, as specified in the absolute maximum ratings table where VCC must not exceed 7 V. The device draws ICC current of up to 160 µA at 5.5 V and 25°C.
Does the 74ACT16374DLRG4 support independent clocking for its two 8-bit sections?
Yes, the 74ACT16374DLRG4 has two dedicated clock inputs - 1CLK (pin 47) and 2CLK (pin 25) - allowing fully independent edge-triggered latching of the first and second 8-bit data groups. This enables flexible timing architectures such as staggered sampling or dual-bus synchronization without external gating logic.
What is the meaning of "flow-through architecture" in the context of the 74ACT16374DLRG4?
Flow-through architecture means input pins (e.g., 1D1–1D8 and 2D1–2D8) and corresponding output pins (1Q1–1Q8 and 2Q1–2Q8) are arranged on opposite sides of the 48-pin SSOP package in aligned positions. This minimizes trace length and skew in PCB layout, especially critical for high-speed parallel buses where timing matching across all 16 bits is essential.
Can the 74ACT16374DLRG4 be used in place of the SN54ACT16374?
No - the 74ACT16374DLRG4 is characterized for –40°C to +85°C operation and packaged in a plastic SSOP (DL), whereas the SN54ACT16374 is a military-grade part rated for –55°C to +125°C and supplied in a ceramic flat package (WD). They share identical logic functionality and AC/DC specifications at 25°C, but thermal, packaging, and qualification differences preclude direct substitution without design validation.
What is the latch-up immunity specification for the 74ACT16374DLRG4?
The 74ACT16374DLRG4 exhibits 500-mA typical latch-up immunity at 125°C, as confirmed in the datasheet's "EPIC process" description. This exceeds JEDEC Standard JESD78 requirements for Class II (≥200 mA), making it suitable for harsh industrial environments where transient-induced latch-up poses reliability risk.
74ACT16374DLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 10.9ns @ 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
74ACT16374DLRG4 FAQ
1.How can I place an order for 74ACT16374DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16374DLRG4 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 74ACT16374DLRG4 reliable?
The price and inventory of 74ACT16374DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16374DLRG4 is usually 5 days.
3.What payment methods are accepted for 74ACT16374DLRG4?
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4.How is shipping managed for 74ACT16374DLRG4?
74ACT16374DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16374DLRG4 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 74ACT16374DLRG4?
For technical support, including 74ACT16374DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16374DLRG4 requirements.
6.How does Aetrix verify that 74ACT16374DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74ACT16374DLRG4 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 74ACT16374DLRG4 meets industry standards.
7.What is the process for return or replacement of 74ACT16374DLRG4?
All 74ACT16374DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16374DLRG4, 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 74ACT16374DLRG4 part is unused and in its original packaging.
Return procedure for 74ACT16374DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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