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Diodes Incorporated 74LVC273AT20-13
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- Part No.:
- 74LVC273AT20-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC273AT20-13.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,246
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Product details
Overview
74LVC273AT20-13 from Diodes Incorporated is an octal positive-edge-triggered D-type flip-flop with asynchronous clear (CLR), designed for synchronous data latching in 1.65V–3.6V logic systems. It delivers 24mA output drive at VCC = 3.0V, supports mixed-voltage interfacing (inputs tolerate up to 5.5V), and features IOFF circuitry for partial power-down protection. Used in bus driving and signal isolation within notebook and peripheral subsystems.
For engineers reviewing the 74LVC273AT20-13 datasheet, 74LVC273AT20-13 pinout, 74LVC273AT20-13 application, or 74LVC273AT20-13 equivalent, key selection criteria include its TSSOP-20 package, 3.3V-compatible timing (tSU = 1.5ns min, fMAX = 230MHz typ), Schmitt-trigger inputs for noise immunity, and IOFF-enabled system-level power sequencing.
Technical Context
This device implements eight independent D-type latches, each triggered on the rising edge of CLK and reset asynchronously by a low-active CLR signal. All inputs incorporate Schmitt-trigger action, enabling robust noise rejection across varying input slew rates and voltage levels.
Its IOFF functionality disables outputs when VCC = 0V, preventing back-drive current in partially powered systems - critical for hot-swap and multi-rail power management. Input voltage tolerance up to 5.5V allows direct interfacing with legacy 5V logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 3.6V - enables operation across modern low-voltage I/O domains including 1.8V, 2.5V, and 3.3V systems. |
| Max Output Drive | ±24mA at VCC = 3.0V - sufficient to drive standard CMOS loads and short PCB traces without external buffers. |
| Input Voltage Tolerance | Up to 5.5V - permits direct connection to 5V logic sources in mixed-voltage designs without level translation. |
| Setup Time (tSU) | 1.5ns min at VCC = 3.3V - supports high-speed clocking up to 230MHz typical maximum frequency. |
| IOFF Leakage | ±10μA max - ensures negligible current flow during power-down, protecting downstream circuitry. |
| ESD Protection | 2kV HBM, 1kV CDM - exceeds JEDEC standards for handling robustness in manufacturing and field environments. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
TSSOP-20 (6.4mm × 6.5mm × 1.2mm, 0.65mm pitch) with exposed pad not electrically connected; JEDEC-compliant footprint per AP02001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CLR | Asynchronous active-low clear input - resets all eight Q outputs to logic low regardless of clock state. |
| 2, 5, 6, 9, 12, 15, 16, 19 | Q1–Q8 | True (non-inverted) latch outputs - retain data until next CLK edge or CLR assertion. |
| 3, 4, 7, 8, 13, 14, 17, 18 | D1–D8 | Data inputs - sampled on rising CLK edge and transferred to corresponding Q outputs. |
| 10 | GND | Ground reference - must be connected to system ground plane for stable noise margin and thermal performance. |
| 11 | CLK | Positive-edge-triggered clock input - initiates sampling of D inputs and update of Q outputs. |
| 20 | VCC | Primary power supply - supplies core logic and I/O circuitry; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable switching under slow or noisy input transitions, eliminating need for external hysteresis components. |
| IOFF partial power-down | Automatically disables outputs when VCC = 0V, preventing back-current into powered sections during power sequencing. |
| Mixed-voltage compatibility | 5.5V-tolerant inputs allow direct interface with 5V peripherals while operating from 1.8V/2.5V/3.3V rails. |
| Low dynamic ground bounce | VOLP < 0.8V at VCC = 3.3V - reduces simultaneous switching noise affecting adjacent signals and power integrity. |
| High noise immunity | VIH/VIL thresholds scale with VCC (e.g., VIH = 0.65×VCC), maintaining consistent logic margins across supply range. |
Applications
| PC Notebook Memory Interface | USB Peripheral Bus Isolation |
|---|---|
|
Use Scenario: Latching address/data strobes between CPU and DDR memory controller in ultra-thin notebooks. IC Role / Device Role / Timing Role: Synchronous data capture element synchronizing burst transfers across voltage-domain boundaries. Use Value: Enables clean timing alignment with 3.3V I/O while supporting 1.8V core logic, reducing interconnect complexity and board layer count. |
Use Scenario: Isolating USB 2.0 hub control lines during host-initiated suspend/resume sequences. IC Role / Device Role / Timing Role: Edge-triggered register holding port enable/disable states during power-state transitions. Use Value: IOFF prevents backfeed from active USB PHY into suspended host controller, eliminating risk of latch-up or data corruption. |
| Industrial PLC I/O Expansion Module | Set-Top Box HDMI Control Logic |
|
Use Scenario: Capturing parallel sensor status bits from isolated analog front-end modules in factory automation systems. IC Role / Device Role / Timing Role: Synchronized input register buffering digital status flags prior to microcontroller polling. Use Value: Schmitt-trigger inputs reject EMI-induced glitches on long PCB traces; wide temperature range ensures reliability in uncontrolled environments. |
Use Scenario: Managing EDID EEPROM access and HDCP handshake signals in consumer AV equipment. IC Role / Device Role / Timing Role: Glitch-free storage of configuration bits controlling HDMI transmitter initialization sequence. Use Value: Low propagation delay (tPD = 4.1ns typ at 3.3V) ensures precise timing alignment with video clock domain, avoiding handshake timeouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with clear applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC273APW | Same logic function and pinout, but TI's version has higher ICC (max 40μA vs Diodes' 10μA typical) and no IOFF specification. | Lacks IOFF - unsuitable for partial power-down systems requiring back-drive prevention. | Select only if IOFF is unnecessary and TI's qualification path aligns with your program requirements. |
| 74LVC273PW,118 | NXP variant uses same TSSOP-20 package but specifies lower max fMAX (150MHz vs 230MHz typ) and no VOLP/VOHV data. | Reduced timing margin may limit use in high-frequency bus interfaces above 100MHz. | Prefer for cost-sensitive, lower-speed applications where full 230MHz capability is unused. |
Compared with SN74LVC273APW and 74LVC273PW,118, the 74LVC273AT20-13 offers superior power-down safety via IOFF, tighter timing specs, and verified 5.5V input tolerance - making it optimal for mixed-rail, high-reliability embedded systems.
Availability
74LVC273AT20-13 is available at Aetrix Electronics and suitable for PC notebook design, industrial PLC I/O expansion, and set-top box HDMI control requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 74LVC273AT20-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient solutions for industrial, computing, and consumer markets.
The 74LVC273A belongs to Diodes' LVC logic family - engineered for low-voltage operation, mixed-signal interoperability, and robust system-level power management in space-constrained portable electronics.
FAQ
Can the 74LVC273AT20-13 operate reliably at 1.65V supply?
Yes - it is fully specified down to 1.65V, with guaranteed tW (CLK pulse width) ≥5.0ns, tSU ≥4.0ns, and VOH ≥1.2V at IOH = −4mA. All AC and DC parameters meet datasheet limits across the full −40°C to +125°C range at this minimum VCC.
Does the CLR input require a pull-up resistor?
No - CLR is internally biased and functions correctly with direct connection to GND or VCC. However, if left floating, it may float to an indeterminate state; Diodes recommends tying unused CLR to VCC via a 10kΩ resistor to ensure defined high state and prevent spurious resets.
What is the purpose of the Schmitt-trigger inputs on this device?
Schmitt-trigger action provides hysteresis (typically 0.3–0.5V) on all inputs, allowing clean logic transitions even with slow-rising or noisy signals - essential for reliable operation when interfacing with mechanical switches, long cables, or unbuffered microcontroller GPIOs.
Is the TSSOP-20 package lead-free and RoHS compliant?
Yes - the 74LVC273AT20-13 is fully lead-free and RoHS 2 compliant (2011/65/EU), with halogen and antimony content below regulated thresholds (<900ppm Br/Cl, <1000ppm Sb), certified per Diodes' AP02001 and AP02002 documentation.
74LVC273AT20-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 230 MHz
- Max Propagation Delay @ V, Max CL:
- 7.3ns @ 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:
- 4 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVC273AT20-13 FAQ
1.How can I place an order for 74LVC273AT20-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC273AT20-13 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 74LVC273AT20-13 reliable?
The price and inventory of 74LVC273AT20-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC273AT20-13 is usually 5 days.
3.What payment methods are accepted for 74LVC273AT20-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC273AT20-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC273AT20-13?
74LVC273AT20-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC273AT20-13 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 74LVC273AT20-13?
For technical support, including 74LVC273AT20-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC273AT20-13 requirements.
6.How does Aetrix verify that 74LVC273AT20-13 is sourced from the original manufacturer or authorized distributors?
All 74LVC273AT20-13 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 74LVC273AT20-13 meets industry standards.
7.What is the process for return or replacement of 74LVC273AT20-13?
All 74LVC273AT20-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC273AT20-13, 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 74LVC273AT20-13 part is unused and in its original packaging.
Return procedure for 74LVC273AT20-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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