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Texas Instruments SN74ABT823DWR
- Part No.:
- SN74ABT823DWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT823DWR.pdf
- Description:
- IC FF D-TYPE SNGL 9BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,697
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Product details
Overview
SN74ABT823DWR from Texas Instruments is a 9-bit bus-interface D-type flip-flop with 3-state outputs, designed for high-drive bidirectional bus buffering in industrial and embedded systems. It operates from 4.5 V to 5.5 V, delivers ±32 mA/±64 mA output drive, supports up to 125 MHz clock frequency, and features high-impedance state during power-up/down - enabling robust hot-swap and bus-sharing applications.
For engineers reviewing the SN74ABT823DWR datasheet, SN74ABT823DWR pinout, SN74ABT823DWR application, or SN74ABT823DWR equivalent, key selection criteria include its 24-pin SOIC (DW) package, TTL-compatible control inputs (CLKEN, OE, CLR), guaranteed 3-state behavior below 2.1 V VCC, and verified performance across –40°C to 85°C.
Technical Context
This device implements nine edge-triggered D-type flip-flops with synchronous clock enable and asynchronous clear, all sharing a common buffered output-enable (OE) input. Its EPIC-IIB BiCMOS architecture enables low power dissipation while maintaining high-speed switching (tPLH/tPHL ≤ 6.8 ns at 5 V, CL = 50 pF) and strong noise immunity (Vhys = 100 mV).
The SN74ABT823DWR integrates input clamping (±18 mA IIK), latch-up immunity (>500 mA per JESD17), and ESD protection (>2000 V HBM, >200 V MM). Its high-impedance state is guaranteed during VCC ramping (0–2.1 V), and OE must be pulled up externally above 2.1 V to ensure reliable 3-state control.
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 CMOS logic rails. |
| Output Drive | –32 mA IOH / +64 mA IOL - drives heavy capacitive buses without external buffers or pull-ups. |
| Max Clock Frequency | 125 MHz - supports high-speed data latching in memory interfaces and I/O expansion. |
| Propagation Delay | tPLH/tPHL ≤ 6.8 ns (VCC = 5 V, CL = 50 pF) - enables tight timing margins in synchronous bus designs. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and automation equipment. |
| Package | 24-pin SOIC (DW) - surface-mount compatible with standard reflow profiles (MSL Level-1). |
| Input Hysteresis | Vhys = 100 mV - improves noise rejection on CLKEN and OE control lines. |
Pinout & Package
SN74ABT823DWR is housed in a 24-pin plastic small-outline integrated circuit (SOIC) package (DW), 7.5 mm wide, with 1.27 mm pitch and gull-wing leads. The package is RoHS-compliant, MSL Level-1 rated, and optimized for automated assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control: asserts high-impedance state on all Q outputs when high; enables normal logic levels when low. |
| 2–10 | 1D–9D | Data inputs for nine D-type flip-flops - sampled on rising edge of CLK when CLKEN is low. |
| 11 | GND | Ground reference for all internal circuitry and output drivers. |
| 12–20 | 1Q–9Q | Registered outputs - reflect stored D-input values when enabled; tri-stated when OE is high. |
| 21 | VCC | Positive supply rail (4.5–5.5 V); powers internal logic and output drivers. |
| 22 | CLK | Clock input - rising-edge trigger for data capture into all nine flip-flops. |
| 23 | CLKEN | Enable/disable clock buffer - low enables CLK sampling; high freezes outputs regardless of CLK. |
| 24 | CLR | Asynchronous clear - forces all Q outputs low independently of CLK or CLKEN when asserted low. |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive 3-State Outputs | –32 mA / +64 mA drive capability eliminates need for external bus drivers or pull-up resistors in backplane and motherboard designs. |
| Power-Up/Down High-Z Guarantee | Outputs enter high-impedance state automatically when VCC is between 0 and 2.1 V - prevents bus contention during power sequencing. |
| Buffered Control Inputs | CLKEN, OE, and CLR inputs are internally buffered to reduce DC loading and improve noise margin versus unbuffered TTL inputs. |
| EPIC-IIB BiCMOS Process | Combines bipolar speed and CMOS low static power - achieves 125 MHz operation with ICC < 38 mA (all outputs active). |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD17 - ensures robust operation in noisy industrial environments with transient coupling. |
Applications
| Industrial PLC Backplanes | Embedded Memory Interface Buffers |
|---|---|
Use Scenario: Bidirectional data transfer between CPU and multiple I/O modules over shared 9-bit parallel bus. IC Role / Device Role / Timing Role: Bus-interface flip-flop providing registered, 3-state-isolated data path with synchronized clock enable and asynchronous reset. Use Value: Enables deterministic timing via edge-triggered latching and eliminates bus contention using guaranteed high-Z during power transitions. |
Use Scenario: Expanding address/data bus width between microcontroller and external SRAM or flash memory. IC Role / Device Role / Timing Role: 9-bit registered buffer isolating memory bus from controller during read/write cycles and idle states. Use Value: Delivers 64-mA sink current to drive long traces and multiple loads without signal degradation or timing skew. |
| Automated Test Equipment (ATE) Fixture Logic | Legacy Industrial Controller I/O Expansion |
Use Scenario: Controlling and capturing parallel test signals across multiple DUT channels with precise synchronization. IC Role / Device Role / Timing Role: Synchronized data capture and output staging unit with independent clear and output enable for channel isolation. Use Value: Supports 125-MHz sampling rate and provides clean, glitch-free bus isolation during test mode switching. |
Use Scenario: Adding standardized 9-bit parallel I/O ports to legacy programmable logic controllers using 5-V TTL infrastructure. IC Role / Device Role / Timing Role: Bus-interface register implementing working registers and I/O port latches with parity support capability. Use Value: Maintains full TTL voltage compatibility and delivers robust ESD/latch-up protection required in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 9-bit bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT821DWR | 8-bit version (not 9-bit); identical DW package, timing, and drive specs. | Suitable only where 8-bit bus width suffices; lacks ninth bit for parity or extended addressing. | Select SN74ABT821DWR if system requires exactly 8 data lines and footprint compatibility is critical. |
| SN74LVC823ADWR | 3.3-V only (1.65–3.6 V), lower drive (–24/+24 mA), same 24-pin DW package. | Not interoperable with 5-V systems; requires level-shifting when interfacing with legacy 5-V peripherals. | Choose SN74LVC823ADWR only for new 3.3-V designs prioritizing lower power and modern logic families. |
Compared with SN74ABT823DWR, SN74ABT821DWR offers identical 5-V performance but reduced bit count, while SN74LVC823ADWR trades voltage compatibility and drive strength for lower power and 3.3-V integration - neither is pin-compatible nor functionally drop-in without board-level redesign.
Availability
SN74ABT823DWR is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded memory interface buffers, and automated test equipment requiring stable component supply, long-lifecycle support, and guaranteed 5-V TTL interoperability.
Supply support for SN74ABT823DWR 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 logic families.
The SN74ABT823DWR belongs to TI's ABT-series advanced bi-directional bus transceivers and registers, engineered for high-speed, high-drive 5-V system interfacing in industrial automation and legacy computing infrastructure.
FAQ
What is the maximum clock frequency supported by the SN74ABT823DWR?
The SN74ABT823DWR supports a maximum clock frequency of 125 MHz under recommended operating conditions (VCC = 5 V, TA = 25°C, CL = 50 pF). This rating is validated across the full industrial temperature range (–40°C to +85°C), making SN74ABT823DWR suitable for high-speed synchronous bus applications such as memory expansion and I/O multiplexing where timing predictability is critical.
Does the SN74ABT823DWR have built-in power-up/down high-impedance protection?
Yes, the SN74ABT823DWR guarantees high-impedance outputs when VCC is between 0 V and 2.1 V during power-up or power-down sequences. This feature prevents bus contention in multi-device systems. However, to ensure reliable 3-state behavior above 2.1 V, OE must be tied to VCC via an external pullup resistor - minimum value determined by the driver's current-sinking capability.
What are the absolute maximum ratings for output current on the SN74ABT823DWR?
The SN74ABT823DWR allows up to +64 mA sink current (IOL) and –32 mA source current (IOH) per output under steady-state conditions. Absolute maximum ratings specify 128 mA total sink current across all outputs simultaneously, but continuous operation above recommended limits risks thermal overstress or reliability degradation. Always verify PCB trace width and thermal design for sustained high-current operation.
Can the SN74ABT823DWR be used in mixed-voltage systems with 3.3-V logic?
No - the SN74ABT823DWR is strictly a 5-V device with recommended VCC range of 4.5 V to 5.5 V and TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max). Driving its inputs directly from 3.3-V logic may result in marginal noise margins or undefined switching behavior. For 3.3-V systems, consider SN74LVC823ADWR instead, which is not a direct replacement for SN74ABT823DWR.
What package type and lead finish does the SN74ABT823DWR use?
The SN74ABT823DWR uses a 24-pin plastic small-outline IC (SOIC) package designated DW, with 1.27 mm lead pitch and gull-wing leads. Its lead finish is matte tin (NIPDAU), RoHS-compliant, and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), supporting standard Pb-free reflow profiles without special handling requirements.
SN74ABT823DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 9
- Clock Frequency:
- 200 MHz
- Max Propagation Delay @ V, Max CL:
- 6.1ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 250 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
SN74ABT823DWR FAQ
1.How can I place an order for SN74ABT823DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT823DWR 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 SN74ABT823DWR reliable?
The price and inventory of SN74ABT823DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT823DWR is usually 5 days.
3.What payment methods are accepted for SN74ABT823DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT823DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT823DWR?
SN74ABT823DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT823DWR 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 SN74ABT823DWR?
For technical support, including SN74ABT823DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT823DWR requirements.
6.How does Aetrix verify that SN74ABT823DWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT823DWR 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 SN74ABT823DWR meets industry standards.
7.What is the process for return or replacement of SN74ABT823DWR?
All SN74ABT823DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT823DWR, 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 SN74ABT823DWR part is unused and in its original packaging.
Return procedure for SN74ABT823DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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