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Texas Instruments SN74LVC823APW
- Part No.:
- SN74LVC823APW
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC823APW.pdf
- Description:
- IC FF D-TYPE SNGL 9BIT 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,936
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Product details
Overview
SN74LVC823APW from Texas Instruments is a 9-bit bus-interface D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features clock-enable (CLKEN), asynchronous clear (CLR), and buffered output-enable (OE) controls. With 7.9 ns max propagation delay at 3.3 V and 5.5 V-tolerant inputs, it serves as a high-drive buffer register in mixed-voltage I/O interfaces.
For engineers reviewing the SN74LVC823APW datasheet, SN74LVC823APW pinout, SN74LVC823APW application, or SN74LVC823APW equivalent, key selection criteria include its 9-channel noninverting edge-triggered architecture, Ioff partial-power-down support, 3.3-V/5-V mixed-mode signal compatibility, and TSSOP-24 package suitability for space-constrained board designs.
Technical Context
The SN74LVC823APW implements nine independent D-type positive-edge-triggered flip-flops with synchronous data capture controlled by CLK and CLKEN. Its OE input places all nine Q outputs into high-impedance without affecting internal latch states, enabling bidirectional bus arbitration.
CLR operates asynchronously to force all Q outputs low regardless of clock state. Input voltage tolerance up to 5.5 V allows interfacing with legacy 5-V logic while powered from 3.3-V or lower rails, and Ioff circuitry prevents backflow current during partial power-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables direct integration into modern low-voltage digital systems including 1.8-V, 2.5-V, and 3.3-V domains. |
| Max tpd | 7.9 ns at 3.3 V - Supports >100 MHz clock rates in timing-critical bus interface applications. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5-V drivers without level shifters in mixed-voltage systems. |
| Ioff Support | Yes - Disables outputs during power-down to prevent damaging current backflow in partial-power-down modes. |
| Output Drive | ±24 mA at 3 V - Sufficient to drive high-capacitance buses or multiple CMOS loads without external buffers. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded and communications equipment environments. |
| Package | TSSOP-24 (PW) - 4.4 mm × 6.6 mm footprint with 0.65 mm pitch, optimized for automated assembly and thermal performance. |
Pinout & Package
TSSOP-24 (PW) package: 4.4 mm × 6.6 mm body, 0.65 mm lead pitch, 1.2 mm max height, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-low output-enable - Controls all nine Q outputs simultaneously; high-Z state preserves internal data. |
| 2–10 | 1D–9D | Data inputs - Noninverting D inputs for each of nine flip-flop channels. |
| 11 | CLR | Active-low asynchronous clear - Forces all Q outputs low independently of clock or CLKEN state. |
| 12 | GND | Ground reference - Primary return path for logic and output currents. |
| 13 | VCC | Supply voltage - Powers internal logic and output drivers; range 1.65 V–3.6 V. |
| 14–22 | 1Q–9Q | Noninverting outputs - 3-state buffered outputs corresponding to D inputs 1–9. |
| 23 | CLKEN | Active-low clock-enable - Gates clock buffer; high disables latching, holding Q outputs constant. |
| 24 | CLK | Clock input - Positive-edge-triggered master clock for all nine flip-flops. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O | 5.5-V-tolerant inputs with 1.65–3.6-V VCC - Eliminates need for external level translators in 3.3-V/5-V system interconnects. |
| Partial-power-down support | Ioff limits current flow when VCC = 0 - Enables hot-insertion and safe operation in multi-rail systems with staggered power sequencing. |
| High-drive 3-state outputs | ±24 mA drive at 3 V - Reduces need for external bus drivers in high-load memory or peripheral interfaces. |
| Low ground bounce | Typical VOLP < 0.8 V at 3.3 V - Minimizes noise coupling into shared ground planes during simultaneous switching. |
| Robust ESD protection | 2000-V HBM, 200-V MM, 1000-V CDM - Meets industrial reliability requirements without additional protection circuitry. |
Applications
| Industrial I/O Expansion | Memory Interface Buffering |
|---|---|
|
Use Scenario: Adding parallel GPIO capability to PLC controller modules using 3.3-V microcontrollers interfaced to 5-V field sensors. IC Role / Device Role / Timing Role: 9-bit registered buffer providing synchronized, level-shifted, and high-drive I/O expansion with glitch-free state retention during power transitions. Use Value: Enables direct connection of legacy 5-V peripherals without discrete level shifters while maintaining timing integrity via edge-triggered latching. |
Use Scenario: Driving address/data lines between FPGA fabric and external SRAM or flash memory operating at higher capacitance loads. IC Role / Device Role / Timing Role: Bus-interface flip-flop acting as a registered output driver with 3-state control for bidirectional memory access arbitration. Use Value: Provides deterministic setup/hold timing margins and ±24 mA drive strength to meet memory access timing specs under heavy capacitive loading. |
| Communications Backplane Interface | Test Equipment Signal Conditioning |
|
Use Scenario: Isolating and synchronizing control signals across voltage domains in modular telecom line cards with mixed 3.3-V and 5-V subsystems. IC Role / Device Role / Timing Role: Voltage-translating bus register ensuring clean, jitter-controlled signal transfer between clock domains and supply domains. Use Value: Prevents metastability and ground bounce issues during cross-domain handshaking while supporting hot-swap-safe Ioff behavior. |
Use Scenario: Capturing and buffering parallel test vectors from pattern generators before applying them to DUTs with strict VIH/VIL thresholds. IC Role / Device Role / Timing Role: Precision 9-bit latch with tight propagation delay matching (tsk(o) ≤ 1 ns) for skew-sensitive stimulus delivery. Use Value: Guarantees sub-nanosecond channel-to-channel skew and stable output levels across temperature for repeatable ATE timing calibration. |
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 |
|---|---|---|---|
| SN74LVC821APW | 8-bit version (vs. 9-bit); identical VCC range, timing, and Ioff support. | Suitable where one fewer data line is acceptable; same pinout except missing 9D/9Q pins. | Select SN74LVC821APW only if 8-bit width satisfies system requirements and PCB layout reuse is prioritized. |
| 74ALVC16374DGGR | 16-bit, dual-octet configuration; higher drive (±24 mA), same 1.65–3.6 V range but no 5.5-V input tolerance. | Used in wider bus applications requiring 16-bit synchronization; lacks mixed-voltage translation capability. | Choose 74ALVC16374DGGR when doubling channel count is needed and all connected logic operates at ≤3.6 V. |
Compared with SN74LVC823APW, SN74LVC821APW offers identical functionality in an 8-bit form factor for tighter BOM consolidation, while 74ALVC16374DGGR provides double the width at the cost of losing 5-V input compatibility-making SN74LVC823APW uniquely suited for mixed-voltage 9-bit interfaces.
Availability
SN74LVC823APW is available at Aetrix Electronics and suitable for industrial I/O expansion, memory interface buffering, communications backplane interface, and test equipment signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for SN74LVC823APW 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency across industrial, automotive, and communications markets.
The SN74LVC823APW belongs to TI's LVC logic family, engineered for low-voltage, high-speed, mixed-signal interface applications where robustness, voltage translation, and power-aware design are critical.
FAQ
What is the maximum clock frequency supported by the SN74LVC823APW?
The SN74LVC823APW supports a maximum clock frequency of 150 MHz under recommended operating conditions (VCC = 2.7 V to 3.3 V). This rating is derived from timing parameters including minimum pulse width (tw ≥ 3.3 ns) and setup/hold times, and applies across the full industrial temperature range of –40°C to +85°C. The SN74LVC823APW achieves this performance while maintaining 7.9 ns typical propagation delay at 3.3 V.
Does the SN74LVC823APW support 5-V input signals when powered from 3.3 V?
Yes, the SN74LVC823APW supports input voltages up to 5.5 V regardless of VCC level (1.65 V to 3.6 V), enabling direct interfacing with 5-V logic families without external level shifters. This mixed-mode capability is explicitly specified in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official datasheet, and is implemented via overvoltage-tolerant input structures that protect internal circuitry.
How does the Ioff feature function in the SN74LVC823APW?
The Ioff feature in the SN74LVC823APW disables output drivers when VCC = 0 V, preventing current backflow from live inputs or outputs into the unpowered device. This behavior is confirmed in the Functional Description section and Electrical Characteristics table, where Ioff is specified as ±10 µA at VI or VO = 5.5 V and VCC = 0 V. It enables safe partial-power-down operation in multi-rail systems.
What is the thermal resistance (θJA) of the SN74LVC823APW in its TSSOP-24 package?
The SN74LVC823APW in the PW (TSSOP-24) package has a junction-to-ambient thermal resistance (θJA) of 88°C/W, as documented in the Absolute Maximum Ratings table. This value assumes standard JEDEC high-K board conditions and is used to calculate junction temperature rise under load. The package's exposed pad variant is not applicable-the standard PW package uses a plastic body without thermal pad.
Can the SN74LVC823APW be used as a drop-in replacement for SN74LVC823ADW?
No, the SN74LVC823APW is not a drop-in replacement for SN74LVC823ADW due to differing packages: PW is TSSOP-24 (4.4 mm × 6.6 mm, 0.65 mm pitch), while DW is SOIC-24 (7.5 mm × 15.4 mm, 1.27 mm pitch). Pin numbering and mechanical layout are incompatible. Though electrically identical, PCB redesign is required to migrate from DW to PW. The datasheet confirms identical AC/DC specifications but distinct package drawings and thermal data.
SN74LVC823APW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 8ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
SN74LVC823APW FAQ
1.How can I place an order for SN74LVC823APW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC823APW 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 SN74LVC823APW reliable?
The price and inventory of SN74LVC823APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC823APW is usually 5 days.
3.What payment methods are accepted for SN74LVC823APW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC823APW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC823APW?
SN74LVC823APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC823APW 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 SN74LVC823APW?
For technical support, including SN74LVC823APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC823APW requirements.
6.How does Aetrix verify that SN74LVC823APW is sourced from the original manufacturer or authorized distributors?
All SN74LVC823APW 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 SN74LVC823APW meets industry standards.
7.What is the process for return or replacement of SN74LVC823APW?
All SN74LVC823APW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC823APW, 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 SN74LVC823APW part is unused and in its original packaging.
Return procedure for SN74LVC823APW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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