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Texas Instruments SN74ABT162823ADL
- Part No.:
- SN74ABT162823ADL
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT162823ADL.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,616
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Product details
Overview
SN74ABT162823ADL from Texas Instruments is an 18-bit bus-interface D-type flip-flop with 3-state outputs, designed for driving high-capacitance or low-impedance loads in backplane and motherboard applications. It supports dual 9-bit or single 18-bit operation, features integrated 25-Ω series output resistors, delivers 12 mA drive strength per output, and operates across −40°C to 85°C at 4.5–5.5 V supply.
For engineers reviewing the SN74ABT162823ADL datasheet, SN74ABT162823ADL pinout, SN74ABT162823ADL application, or SN74ABT162823ADL equivalent, key selection criteria include hot-insertion support via Ioff and power-up 3-state, flow-through pinout for optimized PCB layout, distributed VCC/GND for noise reduction, and guaranteed 150 MHz clock frequency with sub-3 ns setup/hold times.
Technical Context
This device implements two independent 9-bit D-type flip-flop sections, each with dedicated clock (CLK), clock-enable (CLKEN), clear (CLR), and output-enable (OE) controls. The CLKEN input disables the clock buffer to latch outputs, while CLR forces Q outputs low asynchronously - both functions operate independently of OE state.
Each output incorporates on-die 25-Ω series termination to suppress overshoot/undershoot without external resistors. The architecture includes distributed VCC and GND pins across the 56-pin SSOP package, minimizing simultaneous switching noise, and supports hot insertion via Ioff (±100 µA at VCC = 0) and power-up 3-state circuitry that holds outputs high-impedance during power ramp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL and mixed-voltage system rails. |
| Max Clock Frequency | 150 MHz - enables high-speed data latching in memory buffers and I/O expansion interfaces. |
| Output Drive Strength | ±12 mA - sufficient to directly drive 50-pF loads at full speed without external buffering. |
| Input Transition Rate | 10 ns/V - defines minimum allowable slew rate for reliable timing margin under fast-edge conditions. |
| Propagation Delay (tPLH/tPHL) | 2.3–7.5 ns - guarantees sub-8 ns path delay from CLK↑ to Q transition, critical for synchronous bus timing. |
| Setup/Hold Times | tsu = 2 ns, th = 1.2 ns - tight timing windows enable integration into high-frequency register files and pipeline stages. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and communications equipment. |
Pinout & Package
The SN74ABT162823ADL is housed in a 56-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 13.9 mm × 7.9 mm body size, and 1.2 mm max height - optimized for high-density board layouts with thermal resistance θJA = 56°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear Input | Forces corresponding 9-bit Q outputs low regardless of clock or OE state; active-low, TTL-compatible threshold. |
| 1OE, 2OE | Output Enable Input | Controls 9-bit output group impedance: low = normal logic drive, high = high-Z; does not affect internal flip-flop operation. |
| 1CLK, 2CLK | Clock Input | Low-to-high edge-triggered sampling point for D inputs; synchronized with CLKEN and CLR for deterministic latching. |
| 1CLKEN, 2CLKEN | Clock Enable Input | Disables clock buffer when high, freezing Q outputs; allows dynamic gating of clock distribution without affecting data path. |
| 1D1–1D9, 2D1–2D9 | Data Inputs | Individual D-type inputs for each flip-flop; all referenced to same VCC/GND pair as associated clock/control signals. |
| 1Q1–1Q9, 2Q1–2Q9 | 3-State Outputs | Outputs feature integrated 25-Ω series resistors; capable of sourcing/sinking 12 mA with controlled edge rates. |
| VCC, GND | Power Terminals | Distributed across package (12 VCC, 12 GND pins) - reduces simultaneous switching noise and improves signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω Series Output Resistors | Eliminates need for external termination components, reducing BOM count and PCB area in high-speed bus designs. |
| Hot-Insertion Support (Ioff + Power-Up 3-State) | Prevents backflow current during partial power-up and ensures outputs remain high-Z until VCC stabilizes - essential for live-swap backplanes. |
| Flow-Through Pinout Architecture | Input pins on one side, outputs on opposite side - enables straight-layer routing with minimal layer transitions and crosstalk. |
| Dual 9-Bit or Single 18-Bit Configuration | Flexible partitioning allows use as two independent registers or one wide latch - simplifies design reuse across multiple bus widths. |
| Distributed VCC and GND Pins | 12 power and 12 ground connections minimize IR drop and ground bounce, improving noise immunity in high-speed switching environments. |
Applications
| Backplane Data Buffering | Industrial I/O Expansion Module |
|---|---|
|
Use Scenario: Buffering parallel address/data buses between CPU and peripheral cards in modular rack systems. IC Role / Device Role / Timing Role: 18-bit registered transceiver providing edge-aligned data capture and isolated output drive to reduce inter-slot crosstalk. Use Value: Integrated 25-Ω resistors and 150 MHz clock capability eliminate external termination and support >100 MB/s throughput per lane. |
Use Scenario: Isolating microcontroller GPIOs from noisy relay drivers and sensor inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus interface with asynchronous clear and output-enable for safe state initialization and fault containment. Use Value: Ioff protection prevents backfeed during module hot-swap; high-impedance outputs avoid bus contention during firmware updates. |
| Memory-Mapped Register File | Legacy Parallel Interface Bridge |
|
Use Scenario: Implementing 18-bit working registers in FPGA-based protocol converters interfacing with legacy ISA or PC/104 peripherals. IC Role / Device Role / Timing Role: Synchronous latch with independent clock-enable per 9-bit section for staggered data capture and pipeline staging. Use Value: Sub-3 ns setup/hold and 2.3 ns tPLH enable cycle-accurate timing alignment with 50–100 MHz host bus clocks. |
Use Scenario: Adapting modern SoC parallel interfaces to older printers, scanners, or test equipment using IEEE 1284-compliant handshaking. IC Role / Device Role / Timing Role: Bidirectional bus driver with parity support and flow-through layout to minimize trace skew between data and control lines. Use Value: Distributed VCC/GND and low ground bounce (<1 V VOLP) maintain signal fidelity across long ribbon cables and multi-drop stubs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 18-bit bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162823ADGGR | TSSOP-56 package (vs. SSOP-56); identical electrical specs and pinout; θJA = 64°C/W vs. 56°C/W. | Better suited for reflow-only assembly; slightly higher thermal resistance limits high-power continuous operation. | Select SN74ABT162823ADGGR only if TSSOP footprint and automated placement are required; DL variant preferred for thermal performance. |
| SN74ALVTH162823DGGR | ALVT family: 3.3-V operation (2.3–3.6 V), lower drive (±24 mA), higher speed (200 MHz), different input thresholds. | Designed for mixed-voltage 3.3-V systems; incompatible with 5-V buses without level translation. | Choose SN74ALVTH162823DGGR only for new 3.3-V designs requiring higher frequency; not a drop-in replacement for SN74ABT162823ADL. |
Compared with SN74ABT162823ADGGR and SN74ALVTH162823DGGR, the SN74ABT162823ADL offers superior thermal performance in 5-V industrial systems, maintains full backward compatibility with legacy Widebus™ designs, and provides optimal noise suppression for backplane-level signal integrity - making it the preferred choice where robustness and proven 5-V interoperability are critical.
Availability
SN74ABT162823ADL is available at Aetrix Electronics and suitable for industrial I/O expansion modules, backplane data buffering systems, and memory-mapped register file implementations requiring stable component supply and long-term lifecycle continuity.
Supply support for SN74ABT162823ADL 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 technologies, with over 50 years of innovation in high-reliability interface and timing solutions.
The SN74ABT162823ADL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for high-speed, noise-immune data transfer in industrial, computing, and communications infrastructure.
FAQ
What is the maximum operating frequency of the SN74ABT162823ADL?
The SN74ABT162823ADL is fully specified for operation up to 150 MHz across its entire temperature and voltage range. This maximum clock frequency is validated under recommended conditions (VCC = 4.5–5.5 V, TA = −40°C to 85°C) with CL = 50 pF load, and reflects guaranteed timing margins including setup, hold, and propagation delays - ensuring reliable synchronization in high-speed bus applications without derating.
Does the SN74ABT162823ADL support hot insertion?
Yes, the SN74ABT162823ADL supports hot insertion through two complementary features: Ioff circuitry limits off-state current to ±100 µA when VCC = 0, preventing damaging backflow, and power-up 3-state logic forces outputs into high-impedance during power ramp. These features are tested and guaranteed per JEDEC JESD78, enabling safe use in live-swappable backplane and modular I/O systems without external protection circuitry.
What package type is used for the SN74ABT162823ADL?
The SN74ABT162823ADL uses a 56-pin SSOP (Shrink Small Outline Package) with DL suffix, measuring 13.9 mm × 7.9 mm and 1.2 mm maximum height. It features 0.5-mm lead pitch, RoHS-compliant green finish (Pb-free, no Sb/Br), and JEDEC MO-153 registration. Thermal resistance is θJA = 56°C/W, making it suitable for thermally constrained industrial PCB layouts.
How does the flow-through architecture of the SN74ABT162823ADL benefit PCB layout?
The flow-through architecture of the SN74ABT162823ADL places inputs on one side of the package and corresponding outputs on the opposite side, enabling straight-line trace routing with minimal layer changes and reduced crosstalk. This layout efficiency lowers parasitic inductance/capacitance, improves signal integrity for high-speed buses, and simplifies compliance with controlled-impedance and length-matching requirements in dense backplane designs.
Can the SN74ABT162823ADL be configured as two separate 9-bit registers?
Yes, the SN74ABT162823ADL contains two functionally independent 9-bit D-type flip-flop sections, each with dedicated clock (1CLK/2CLK), clock-enable (1CLKEN/2CLKEN), clear (1CLR/2CLR), and output-enable (1OE/2OE) inputs. This allows concurrent or staggered operation - for example, latching address and data words separately - without shared timing constraints or resource contention between sections.
SN74ABT162823ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 9
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 6.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 500 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-SSOP
SN74ABT162823ADL FAQ
1.How can I place an order for SN74ABT162823ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT162823ADL 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 SN74ABT162823ADL reliable?
The price and inventory of SN74ABT162823ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT162823ADL is usually 5 days.
3.What payment methods are accepted for SN74ABT162823ADL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT162823ADL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT162823ADL?
SN74ABT162823ADL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT162823ADL 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 SN74ABT162823ADL?
For technical support, including SN74ABT162823ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162823ADL requirements.
6.How does Aetrix verify that SN74ABT162823ADL is sourced from the original manufacturer or authorized distributors?
All SN74ABT162823ADL 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 SN74ABT162823ADL meets industry standards.
7.What is the process for return or replacement of SN74ABT162823ADL?
All SN74ABT162823ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162823ADL, 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 SN74ABT162823ADL part is unused and in its original packaging.
Return procedure for SN74ABT162823ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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