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Texas Instruments SN74ABT16374ADLRG4
- Part No.:
- SN74ABT16374ADLRG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT16374ADLRG4.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,317
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Product details
Overview
SN74ABT16374ADLRG4 from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for high-speed bus interface and data latching in industrial and embedded systems. It operates at 4.5–5.5 V, supports 150 MHz clock frequency, delivers ±32 mA/64 mA output drive, and features distributed VCC/GND pins to suppress switching noise.
For engineers reviewing the SN74ABT16374ADLRG4 datasheet, SN74ABT16374ADLRG4 pinout, SN74ABT16374ADLRG4 application, or SN74ABT16374ADLRG4 equivalent, key selection criteria include its 48-pin SSOP (DL) package, dual 8-bit or unified 16-bit operation mode, OE-controlled 3-state output capability, and guaranteed –40°C to 85°C industrial temperature range.
Technical Context
This device implements two independent 8-bit edge-triggered D-type flip-flop banks, each with asynchronous 3-state output enable (OE), enabling flexible bus buffering and register staging. Its EPIC-IIB BiCMOS process delivers low ground bounce (<0.8 V) and latch-up immunity (>500 mA).
The architecture uses flow-through pin mapping and distributed power/ground pins to minimize simultaneous switching noise. Internal logic retains state during OE assertion, allowing data capture while outputs remain high-impedance - critical for hot-swap and multi-master bus arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 16-bit positive-edge-triggered D-type flip-flop with independent 3-state output control per bank |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5-V TTL and mixed-voltage system backplanes |
| Max Clock Frequency | 150 MHz - supports high-throughput data capture in memory interfaces and FIFO controllers |
| Output Drive | –32 mA (IOH), +64 mA (IOL) - drives heavy capacitive loads (e.g., >50 pF traces) without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 5.4 ns @ VCC = 5 V - enables sub-7 ns cycle timing in synchronous bus designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in factory automation and telecom infrastructure |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - compatible with standard TTL and CMOS logic families |
Pinout & Package
SN74ABT16374ADLRG4 is housed in a 48-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 0.5 mm pitch, with exposed thermal pad not present. Pin 1 is marked by a beveled corner and located in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output Enable (active-low) | Independent control of 8-bit output banks; asserts high-impedance state without affecting internal flip-flop state |
| 1CLK, 2CLK | Clock input (positive edge) | Edge-sensitive sampling of D inputs; both clocks may be tied for 16-bit synchronous operation |
| 1D1–1D8, 2D1–2D8 | Data inputs | 16 parallel D inputs; each maps directly to corresponding Q output on clock edge |
| 1Q1–1Q8, 2Q1–2Q8 | Tri-state outputs | High-drive outputs capable of sourcing/sinking up to 32 mA/64 mA; enter Z-state when OE = HIGH |
| VCC (Pins 7, 18, 29, 40) | Power supply | Distributed VCC pins reduce IR drop and switching noise across wide bus interfaces |
| GND (Pins 4, 11, 22, 33, 44) | Ground reference | Five dedicated GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin architecture | Input-to-output signal path aligned across package width - simplifies PCB routing and minimizes trace skew |
| High-impedance during power-up/down | Outputs remain in Z-state when VCC < 2.1 V - prevents bus contention during system reset sequences |
| Low ground bounce (VOLP) | <0.8 V @ 5 V, 25°C - maintains signal integrity under heavy simultaneous switching conditions |
| ESD protection | >2000 V per MIL-STD-883 Method 3015 - enhances robustness in handling and board assembly |
| Latch-up immunity | >500 mA per JESD-17 - ensures survivability in transient overvoltage events on I/O lines |
Applications
| Industrial Bus Interface | Memory Address Latching |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO from noisy 16-bit parallel bus segments in PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional bus buffer and level-shifting register that synchronizes address/data transfers between MCU and peripheral ASICs. Use Value: High-drive outputs eliminate need for discrete pull-ups; 3-state control enables shared bus arbitration without contention. |
Use Scenario: Capturing and holding 16-bit memory address signals before DRAM row/column activation. IC Role / Device Role / Timing Role: Edge-triggered address latch ensuring setup/hold compliance with SDRAM controller timing windows. Use Value: 1.1 ns data setup time and 5.4 ns max propagation delay meet tight tSA/tHA requirements for 133 MHz memory buses. |
| Configurable I/O Port | Test Equipment Data Capture |
|
Use Scenario: Implementing programmable 16-bit I/O port in automated test equipment with configurable direction control. IC Role / Device Role / Timing Role: Dual 8-bit register providing synchronized input sampling and output driving under host processor control. Use Value: Independent OE pins allow dynamic reconfiguration of input vs. output groups without disturbing latched data. |
Use Scenario: Capturing parallel digital waveform data from DUTs at up to 150 MSPS in boundary-scan validation systems. IC Role / Device Role / Timing Role: High-speed data acquisition latch synchronizing sampled signals to system clock domain. Use Value: Guaranteed 150 MHz operation and low jitter (<0.5 ns typical) ensure accurate timestamp alignment across all 16 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16374ADGGR | TSSOP-48 (DGG) package; same electrical specs, 1.2 mm max height vs. DL's 2.0 mm | Better suited for space-constrained layouts requiring lower profile; thermal resistance θJA = 89°C/W vs. DL's 94°C/W | Choose SN74ABT16374ADGGR for compact PCBs where vertical clearance is limited and thermal margin allows. |
| SN74LVCH16374ADLR | Lower-voltage 3.3 V operation (1.65–3.6 V); LVCMOS-compatible thresholds; reduced drive (±24 mA/24 mA) | Targeted at mixed-signal SoC interfaces and battery-powered instrumentation; not 5-V tolerant | Choose SN74LVCH16374ADLR only when migrating to 3.3 V systems and full 5-V drive is unnecessary. |
Compared with SN74ABT16374ADGGR and SN74LVCH16374ADLR, the SN74ABT16374ADLRG4 provides optimal balance of 5-V bus compatibility, industrial temperature range, and mechanical robustness in SSOP-DL - making it preferred for legacy 5-V infrastructure upgrades and high-noise factory environments.
Availability
SN74ABT16374ADLRG4 is available at Aetrix Electronics and suitable for industrial bus interface, memory address latching, and configurable I/O port applications requiring stable component supply across extended product lifecycles.
Supply support for SN74ABT16374ADLRG4 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 decades of heritage in high-reliability interface ICs.
The SN74ABT16374ADLRG4 belongs to TI's Widebus™ family of high-speed bus-interface logic, engineered specifically for noise-immune, high-drive data transfer in industrial control, telecom, and computing backplane applications.
FAQ
What is the maximum clock frequency supported by the SN74ABT16374ADLRG4?
The SN74ABT16374ADLRG4 supports a maximum clock frequency of 150 MHz across its full operating temperature range (–40°C to +85°C) and supply voltage (4.5 V to 5.5 V). This rating is verified under CL = 50 pF load conditions and reflects guaranteed performance - not typical-only behavior - making it suitable for demanding synchronous bus applications such as memory controllers and FPGA I/O expansion.
Does the SN74ABT16374ADLRG4 support hot-swap or live-insertion scenarios?
Yes, the SN74ABT16374ADLRG4 supports safe hot-swap operation: its outputs enter a high-impedance state when VCC is below 2.1 V during power-up or power-down, preventing bus contention. Additionally, OE remains functional across the entire VCC range, allowing software-controlled isolation before and after power sequencing - a key requirement for modular backplane systems using the SN74ABT16374ADLRG4.
Can the SN74ABT16374ADLRG4 be used as two independent 8-bit registers?
Yes, the SN74ABT16374ADLRG4 contains two functionally independent 8-bit D-type flip-flop banks (Bank 1: Pins 1D1–1Q8; Bank 2: Pins 2D1–2Q8), each with dedicated clock (1CLK/2CLK) and output-enable (1OE/2OE) inputs. This allows fully asynchronous operation - for example, capturing data on one bank while holding or updating the other - without internal coupling or timing dependency between banks.
What is the recommended pull-up resistor value for OE when VCC > 2.1 V?
When VCC exceeds 2.1 V, TI recommends tying OE to VCC via a pull-up resistor to guarantee high-impedance output state. The minimum resistor value is determined by the current-sinking capability of the driving source; for standard TTL-compatible drivers, a 4.7 kΩ resistor is commonly used and ensures OE remains above 2 V while limiting current to <1 mA - preserving noise margin and avoiding excessive loading on the control line.
Is the SN74ABT16374ADLRG4 RoHS compliant and lead-free?
Yes, the SN74ABT16374ADLRG4 is RoHS compliant and features NiPdAu (NIPDAU) lead finish, as confirmed in TI's official packaging addendum. It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is qualified for lead-free reflow per JEDEC J-STD-020, with peak reflow temperature of 260°C - fully compatible with modern Pb-free manufacturing processes.
SN74ABT16374ADLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- 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:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.6ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 2 mA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74ABT16374ADLRG4 FAQ
1.How can I place an order for SN74ABT16374ADLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16374ADLRG4 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 SN74ABT16374ADLRG4 reliable?
The price and inventory of SN74ABT16374ADLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16374ADLRG4 is usually 5 days.
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SN74ABT16374ADLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16374ADLRG4 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 SN74ABT16374ADLRG4?
For technical support, including SN74ABT16374ADLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16374ADLRG4 requirements.
6.How does Aetrix verify that SN74ABT16374ADLRG4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT16374ADLRG4 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 SN74ABT16374ADLRG4 meets industry standards.
7.What is the process for return or replacement of SN74ABT16374ADLRG4?
All SN74ABT16374ADLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16374ADLRG4, 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 SN74ABT16374ADLRG4 part is unused and in its original packaging.
Return procedure for SN74ABT16374ADLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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