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Texas Instruments SN74ABT16823DGVR
- Part No.:
- SN74ABT16823DGVR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT16823DGVR.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,484
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Product details
Overview
SN74ABT16823DGVR from Texas Instruments is an 18-bit bus-interface D-type flip-flop with 3-state outputs, designed for high-speed bidirectional bus buffering and I/O port expansion in 5-V systems. It features dual 9-bit sections (independent clock-enable and clear), ±32-mA high-drive outputs, 150-MHz max clock frequency, and guaranteed operation from –40°C to 85°C. It is used in industrial backplanes, memory interface buffers, and programmable logic I/O expansion.
For engineers reviewing the SN74ABT16823DGVR datasheet, SN74ABT16823DGVR pinout, SN74ABT16823DGVR application, or SN74ABT16823DGVR equivalent, key selection criteria include 3-state drive strength (–32 mA/64 mA), power-up high-impedance behavior, flow-through pin architecture for PCB layout optimization, and TVSOP-56 (DGV) package compatibility with high-density routing.
Technical Context
This device implements two independent 9-bit edge-triggered D-type flip-flop banks, each with dedicated CLKEN, CLR, and OE controls. Clock-enable logic disables the clock buffer to hold output state without affecting internal data retention, while asynchronous clear forces Q outputs low regardless of clock phase.
The 3-state output drivers use EPIC-IIB BiCMOS technology to achieve low ground bounce (<1 V VOLP), distributed VCC/GND pinning to suppress switching noise, and flow-through pin mapping (inputs on one side, outputs on the opposite) to minimize trace crossovers and signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 18-bit D-type flip-flop with dual 9-bit banks, 3-state outputs |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL and CMOS buses |
| Output Drive | –32 mA IOH / 64 mA IOL - drives heavy capacitive loads (e.g., >50 pF traces or multiple inputs) without external buffers |
| Max Clock Frequency | 150 MHz - supports high-speed synchronous bus transfer up to 150 million transitions/sec |
| Propagation Delay | tPLH/tPHL ≤ 6.8 ns (CLK→Q) - enables sub-7-ns timing margins in 100+ MHz designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
| Package | TVSOP-56 (DGV), 6.8 mm × 11.7 mm × 1.2 mm - ultra-thin, fine-pitch surface-mount for space-constrained PCBs |
Pinout & Package
SN74ABT16823DGVR is housed in a 56-pin Thin Very Small Outline Package (TVSOP, DGV), measuring 6.8 mm × 11.7 mm with 0.4-mm lead pitch and maximum height of 1.2 mm. Its flow-through pin arrangement separates inputs (left/right sides) from outputs (opposite edges), minimizing layer transitions and stub lengths in high-speed layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous clear input (active-low) | Forces corresponding 9-bit Q outputs low immediately, independent of clock or CLKEN state |
| 1OE, 2OE | Output-enable input (active-low) | Places respective 9-bit outputs in high-impedance state; does not affect internal flip-flop operation |
| 1CLKEN, 2CLKEN | Clock-enable input (active-low) | Disables clock path to latch current Q state; allows data retention during bus arbitration |
| 1CLK, 2CLK | Positive-edge clock input | Triggers data capture from D inputs to Q outputs on rising edge when CLKEN is low |
| 1D1–1D9, 2D1–2D9 | Data inputs | Parallel 18-bit input bus; each D feeds corresponding Q output on clock edge |
| 1Q1–1Q9, 2Q1–2Q9 | 3-state output terminals | High-drive buffered outputs supporting bidirectional bus driving with no external pull-ups |
| VCC, GND | Power and ground | Distributed across package (12 VCC, 12 GND pins) - reduces simultaneous switching noise and improves PSRR |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS process | Reduces dynamic power vs. pure bipolar while maintaining TTL-compatible drive and speed |
| Power-up/power-down high-impedance | Outputs remain Hi-Z when VCC is between 0 V and 2.1 V - prevents bus contention during supply ramp |
| Flow-through architecture | Input and output pins placed on opposing sides - eliminates layer jumps and minimizes trace length mismatch |
| ESD protection | >2000 V HBM, >200 V machine model - meets industrial handling requirements without added protection circuitry |
| Low ground bounce | VOLP < 1 V at VCC = 5 V - maintains signal integrity under heavy capacitive loading and fast edge rates |
Applications
| Industrial Backplane Interface | Memory Expansion Buffer |
|---|---|
|
Use Scenario: Interfacing FPGA or microcontroller I/O to a 16-bit parallel backplane with long trace runs and multiple slot loads. IC Role / Device Role / Timing Role: Bidirectional bus transceiver and register stage - isolates master timing domain from variable load capacitance and provides clean, driven signals. Use Value: ±32-mA/64-mA drive ensures signal integrity across 10+ inch traces; 3-state control enables hot-swap-safe slot enable/disable without bus contention. |
Use Scenario: Expanding SRAM or Flash memory data bus width from 8-bit to 18-bit in a compact industrial controller. IC Role / Device Role / Timing Role: Synchronous data latch and bus driver - captures address/data on clock edge and presents stable, high-current outputs to memory chips. Use Value: 150-MHz clock rating supports fast memory access cycles; distributed VCC/GND pins suppress noise coupling into sensitive analog sections on same board. |
| FPGA I/O Port Extension | Programmable Logic Control Register |
|
Use Scenario: Adding 18 additional synchronized I/O bits to a resource-constrained FPGA design via parallel interface. IC Role / Device Role / Timing Role: Off-chip I/O register bank - extends FPGA's physical pin count while preserving internal logic resources for computation. Use Value: Dual 9-bit sections allow independent control per peripheral group; CLKEN enables glitch-free reconfiguration without disrupting active I/O. |
Use Scenario: Implementing a programmable status register in a PLC module that must retain state during partial power cycling. IC Role / Device Role / Timing Role: Nonvolatile-latch-equivalent storage element - holds configuration bits across reset events using asynchronous CLR and clocked D inputs. Use Value: Power-up Hi-Z prevents spurious writes during brown-out; retained internal state allows immediate resumption of control logic after VCC stabilizes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT16223DGVR | 16-bit (two 8-bit) version; identical DGV package, timing, and drive specs | Suitable where 16-bit bus width suffices; saves 2 I/O pins and slightly lower propagation delay (6.4 ns) | Select when exact 18-bit width is unnecessary and pin count optimization is critical |
| SN74LVCH162237ADGGR | 16-bit, 3.3-V only (1.65–3.6 V), LVCMOS level; lower drive (–24 mA/24 mA), higher max fCLK (200 MHz) | Designed for mixed-voltage 3.3-V systems; incompatible with 5-V buses without level translation | Choose for modern low-power 3.3-V designs requiring higher speed but sacrificing 5-V tolerance and drive strength |
Compared with SN74ABT16223DGVR and SN74LVCH162237ADGGR, the SN74ABT16823DGVR uniquely delivers 18-bit width, 5-V robustness, and industrial temperature range in the same compact TVSOP-56 footprint - making it optimal for legacy-compatible, high-noise-margin bus expansion where bit width and voltage compliance are non-negotiable.
Availability
SN74ABT16823DGVR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion buffers, FPGA I/O extension, and programmable logic control registers requiring stable component supply and long-term production continuity.
Supply support for SN74ABT16823DGVR 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 90 years of innovation in industrial, automotive, and communications markets.
The SN74ABT16823DGVR belongs to TI's Widebus™ family of high-speed bus-interface logic, engineered specifically for noise-immune, high-drive 5-V system interconnect in demanding industrial and telecom infrastructure applications.
FAQ
What is the operating voltage range for SN74ABT16823DGVR?
The SN74ABT16823DGVR operates from 4.5 V to 5.5 V. It is not rated for 3.3-V operation. Operation below 4.5 V may result in undefined timing or output drive behavior, and voltages above 5.5 V exceed absolute maximum ratings and risk permanent damage. The device enters high-impedance state during power-up when VCC is between 0 V and 2.1 V, but full functionality requires ≥4.5 V.
Does SN74ABT16823DGVR support hot-swap or live insertion?
Yes - the SN74ABT16823DGVR supports hot-swap operation due to its inherent power-up/power-down high-impedance feature. When VCC is between 0 V and 2.1 V, all outputs remain in Hi-Z, preventing bus contention during insertion. For reliable hot-swap, OE should be tied to VCC via a pullup resistor (value determined by driver capability) to ensure Hi-Z above 2.1 V.
How many independent clock domains does SN74ABT16823DGVR support?
The SN74ABT16823DGVR supports two independent clock domains: one for bits 1–9 (controlled by 1CLK and 1CLKEN) and another for bits 10–18 (controlled by 2CLK and 2CLKEN). Each domain has dedicated asynchronous clear (1CLR/2CLR) and output-enable (1OE/2OE) signals, enabling fully decoupled timing and control for heterogeneous bus segments.
What is the maximum capacitive load SN74ABT16823DGVR can drive reliably?
The SN74ABT16823DGVR is characterized for CL = 50 pF in timing tests and supports heavier loads due to its ±32-mA/64-mA drive strength. In practice, it reliably drives ≥100 pF with <1-V ground bounce at 150 MHz, provided PCB layout follows TI's flow-through routing recommendations and distributed power/ground pins are properly decoupled with local 0.1-µF ceramics.
Is SN74ABT16823DGVR pin-compatible with other ABT16xxx devices?
No - SN74ABT16823DGVR is not pin-compatible with other ABT16xxx variants such as SN74ABT16223 or SN74ABT16373. While all use 56-pin DGV/DGG packages, pin functions differ significantly (e.g., dual-clock-enable vs. single-clock, separate clears per bank). Layout reuse requires verification against the specific SN74ABT16823DGVR pinout diagram and top-view marking "AH823".
SN74ABT16823DGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 56-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 5.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- 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-TVSOP
SN74ABT16823DGVR FAQ
1.How can I place an order for SN74ABT16823DGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT16823DGVR 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 SN74ABT16823DGVR reliable?
The price and inventory of SN74ABT16823DGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT16823DGVR is usually 5 days.
3.What payment methods are accepted for SN74ABT16823DGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT16823DGVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT16823DGVR?
SN74ABT16823DGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT16823DGVR 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 SN74ABT16823DGVR?
For technical support, including SN74ABT16823DGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT16823DGVR requirements.
6.How does Aetrix verify that SN74ABT16823DGVR is sourced from the original manufacturer or authorized distributors?
All SN74ABT16823DGVR 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 SN74ABT16823DGVR meets industry standards.
7.What is the process for return or replacement of SN74ABT16823DGVR?
All SN74ABT16823DGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT16823DGVR, 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 SN74ABT16823DGVR part is unused and in its original packaging.
Return procedure for SN74ABT16823DGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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