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Nexperia USA Inc. 74HCT273PW,112
- Part No.:
- 74HCT273PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT273PW,112.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,412
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Product details
Overview
74HCT273PW,112 from Nexperia is an octal positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), designed for synchronous data latching in digital control and interface circuits. It operates from 4.5 V to 5.5 V, delivers 15 ns typical propagation delay at 4.5 V/50 pF, supports -40 °C to +125 °C industrial temperature range, and features TTL-compatible inputs for seamless integration with legacy logic systems.
For engineers reviewing the 74HCT273PW,112 datasheet, 74HCT273PW,112 pinout, 74HCT273PW,112 application, or 74HCT273PW,112 equivalent, this device is selected for precise edge-triggered state capture in microcontroller I/O expansion, LED matrix drivers, and industrial PLC input staging where deterministic timing, noise immunity, and robust reset behavior are required.
Technical Context
The 74HCT273PW,112 implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures the logic level present on its Dn input on the LOW-to-HIGH transition of CP, provided setup (12 ns min at 4.5 V) and hold (3 ns min) timing constraints are met.
MR overrides clock and data: a LOW on MR forces all Qn outputs LOW regardless of CP or Dn states. Inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with 5 V TTL and mixed-voltage systems without level shifters. |
| Propagation Delay (CP→Qn) | 16 ns (typ) / 45 ns (max) at 4.5 V, 50 pF - Defines maximum clock-to-output timing uncertainty in synchronous pipelines. |
| Set-up Time (Dn→CP) | 12 ns (min) at 4.5 V - Specifies minimum stable data window before clock edge for reliable sampling. |
| Hold Time (Dn→CP) | 3 ns (min) at 4.5 V - Determines minimum data stability duration after clock edge to prevent metastability. |
| Output Drive Strength | ±4.0 mA (VOH/VOL) at VCC = 4.5 V - Sufficient to drive standard TTL loads or multiple 74-series inputs directly. |
| Input Compatibility | TTL-level - Accepts 2.0 V (VIH min) and 0.8 V (VIL max) thresholds, enabling direct connection to 5 V microcontrollers and legacy logic. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules, industrial motor drives, and high-ambient embedded controllers. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1); 20-lead, 4.4 mm body width, 0.65 mm pitch; lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Master Reset input | Asynchronous active-LOW signal forcing all Qn outputs LOW; overrides clock and data, critical for system initialization and fault recovery. |
| 2 (VCC) | Positive supply | Primary power rail (4.5–5.5 V); decoupling capacitor placement near this pin minimizes switching noise coupling into logic paths. |
| 3–4, 7–8, 13–14, 17–18 (D0–D7) | Data inputs | Eight independent parallel data lines sampled on CP rising edge; each requires individual setup/hold compliance for deterministic latching. |
| 5, 6, 9, 12, 15, 16, 19 (Q0–Q7) | Flip-flop outputs | Eight buffered, non-inverted latched outputs; fan-out limited by ±4.0 mA drive capability and capacitive load (CL ≤ 50 pF typical). |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and output currents; must be low-impedance and tied to system ground plane. |
| 11 (CP) | Clock input | Edge-sensitive input triggering simultaneous capture across all eight flip-flops; requires clean, monotonic rising edge with <20 ns rise time. |
| 20 (VCC) | Positive supply (duplicate) | Second VCC connection improves power distribution integrity and reduces supply bounce during simultaneous output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VIH = 2.0 V (min), VIL = 0.8 V (max) at VCC = 4.5–5.5 V - Eliminates need for external level translators when interfacing with 5 V MCUs or legacy logic families. |
| High noise immunity | Typical 400 mV noise margin at VCC = 5 V - Ensures reliable operation in electrically noisy industrial environments with EFT and burst interference. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - Reduces risk of handling damage during PCB assembly and field service without requiring special ESD protocols. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - Prevents destructive parasitic SCR conduction during transient overvoltage events on I/O pins. |
| Wide temperature operation | -40 °C to +125 °C - Enables use in under-dash automotive ECUs, outdoor telecom equipment, and high-power industrial inverters. |
Applications
| Microcontroller I/O Expansion | LED Matrix Row Drivers |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU to drive 64 LEDs in an 8×8 multiplexed display. IC Role / Device Role / Timing Role: Latches row-select signals synchronously with scan clock, isolating MCU timing from display refresh jitter. Use Value: Enables deterministic row activation with 15 ns CP→Qn delay, reducing ghosting and ensuring uniform brightness across all rows. |
Use Scenario: Controlling 8 parallel segments of a 7-segment display module in an industrial HMI panel. IC Role / Device Role / Timing Role: Captures digit segment data from SPI-shifted bytes and presents stable parallel outputs to segment drivers. Use Value: Provides glitch-free static segment drive with MR-initiated blanking during digit updates, eliminating visual flicker. |
| PLC Input Staging | Digital Signal Acquisition Buffer |
|
Use Scenario: Capturing 8 isolated digital sensor inputs (e.g., limit switches, proximity sensors) in a programmable logic controller. IC Role / Device Role / Timing Role: Synchronizes asynchronous field inputs to the PLC's deterministic scan cycle using a centralized clock and MR for emergency stop reset. Use Value: Guarantees single-cycle sampling with 12 ns setup requirement, preventing metastability-induced false triggers in safety-critical monitoring. |
Use Scenario: Buffering parallel ADC output bits (e.g., from ADS8320) before transfer to an FPGA data acquisition core. IC Role / Device Role / Timing Role: Holds conversion result stable during FPGA read access, decoupling ADC timing from processor bus latency. Use Value: Delivers 4.0 mA output drive to meet FPGA input VIH requirements without external buffers, simplifying board layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT273PWR (TI) | Identical logic function, same TSSOP-20 package, but specified only to +85 °C (not +125 °C); higher ICC (160 μA max vs. 80 μA) | Not suitable for under-hood automotive or high-ambient industrial enclosures requiring full -40 °C to +125 °C operation | Select if cost sensitivity outweighs extended temperature need and ambient stays below 85 °C. |
| 74HCT374PW,118 (Nexperia) | Octal D-type latch (transparent) instead of edge-triggered flip-flop; identical pinout but CP functions as enable, not clock | Cannot replace 74HCT273PW,112 in edge-sensitive sampling applications; suited for bus-hold or gated data pass-through | Choose only when synchronous latching is unnecessary and data transparency during enable is required. |
Compared with SN74HCT273PWR, the 74HCT273PW,112 offers guaranteed +125 °C operation and lower quiescent current-critical for thermally constrained automotive modules. Against 74HCT374PW,118, it provides true edge-triggered behavior essential for clock-domain crossing and deterministic state capture.
Availability
74HCT273PW,112 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, LED matrix drivers, PLC input staging, and digital signal acquisition buffering requiring stable component supply across automotive, industrial, and test equipment programs.
Supply support for 74HCT273PW,112 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
Nexperia is a global semiconductor expert specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HCT273PW,112 belongs to Nexperia's industry-standard 74HCT logic family, engineered for TTL-compatible interfacing, robust noise immunity, and extended temperature reliability in mission-critical embedded control systems.
FAQ
What is the maximum clock frequency supported by the 74HCT273PW,112?
The 74HCT273PW,112 supports a maximum clock frequency of 30 MHz at VCC = 4.5 V and CL = 50 pF, based on its 16 ns typical propagation delay and 12 ns minimum setup time. At 5.0 V and reduced load (CL = 15 pF), operation up to 36 MHz is achievable per datasheet Table 7.
Can the 74HCT273PW,112 be used with a 3.3 V microcontroller?
No-the 74HCT273PW,112 requires 4.5 V to 5.5 V supply and has TTL-level inputs (VIH min = 2.0 V), making it incompatible with direct 3.3 V logic interfacing. A level-shifter or 74LVC273 variant is required for 3.3 V systems.
Is the master reset (MR) input synchronous or asynchronous?
The MR input is asynchronous and active LOW: asserting MR immediately forces all Qn outputs LOW within 23 ns (max at 4.5 V), independent of the CP signal or Dn states. This enables immediate system-wide reset without waiting for the next clock edge.
Does the 74HCT273PW,112 require external pull-up or pull-down resistors on unused inputs?
No-unused Dn or CP inputs should be tied HIGH or LOW via direct connection to VCC or GND. The device includes internal clamp diodes and does not require external biasing; floating inputs may cause increased ICC and unpredictable output states due to noise susceptibility.
74HCT273PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 36 MHz
- Max Propagation Delay @ V, Max CL:
- 30ns @ 4.5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 5.2mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74HCT273PW,112 FAQ
1.How can I place an order for 74HCT273PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT273PW,112 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 74HCT273PW,112 reliable?
The price and inventory of 74HCT273PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT273PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT273PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT273PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT273PW,112?
74HCT273PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT273PW,112 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 74HCT273PW,112?
For technical support, including 74HCT273PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT273PW,112 requirements.
6.How does Aetrix verify that 74HCT273PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT273PW,112 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 74HCT273PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT273PW,112?
All 74HCT273PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT273PW,112, 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 74HCT273PW,112 part is unused and in its original packaging.
Return procedure for 74HCT273PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT273PW,112 Tags
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