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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Nexperia USA Inc. 74HC273PW/S911118

Name: 74HC273PW/S911118
Brand: Nexperia USA Inc.
SKU: 74HC273PW/S911118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC273PW/S911118

Manufacturer:: Nexperia USA Inc.

Category:: Flip Flops

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74HC273PW/S911118.pdf

Description:: IC FF D-TYPE SNGL 8BIT 20TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74HC273PW/S911118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), designed for synchronous data latching in digital logic systems. It operates across 2.0 V to 6.0 V supply, delivers 8-bit parallel storage with <30 ns propagation delay at 4.5 V, and supports industrial temperature range (–40 °C to +125 °C) in TSSOP20 package. Used in address/data register buffering, bus interface synchronization, and clock-domain crossing circuits.

For engineers reviewing the 74HC273PW/S911118 datasheet, 74HC273PW/S911118 pinout, 74HC273PW/S911118 application, or 74HC273PW/S911118 equivalent, this page provides verified functional identity, validated timing parameters (t_pd, t_su, t_h), confirmed pin mapping for TSSOP20, thermal derating behavior, and direct alternatives with documented input-level and speed differences.

Technical Context

This device implements eight independent edge-triggered D flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop samples its Dn input on the LOW-to-HIGH transition of CP, provided setup and hold time requirements are met - minimum t_su = 12 ns and t_h = 3 ns at V_CC = 4.5 V.

MR overrides clock and data: a LOW on MR forces all Qn outputs LOW regardless of CP state or Dn values. Input clamp diodes enable safe interfacing to voltages exceeding V_CC when used with current-limiting resistors, supporting mixed-voltage system integration.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	74HC CMOS - compatible with 2.0–6.0 V supply; CMOS-level inputs; low static power (ICC ≤ 160 μA at 125 °C)
Function	Octal D-type flip-flop with asynchronous master reset - latches 8-bit parallel data on rising CP edge; MR clears all outputs independently
Propagation Delay (t_pd)	15 ns typical (V_CC = 4.5 V, CL = 50 pF) - determines maximum synchronous throughput in register chains
Set-up / Hold Time	t_su = 12 ns / t_h = 3 ns (V_CC = 4.5 V) - defines minimum data stability window before/after CP rising edge
Operating Temperature	–40 °C to +125 °C - qualified for extended industrial environments without derating below 100 °C
Power Dissipation	P_tot = 500 mW (T_amb ≤ 100 °C); derates 10.0 mW/K above 100 °C - constrains thermal design in dense PCB layouts
Input Clamping	Clamp diodes on all inputs - allows safe overvoltage tolerance (VI > VCC) with external series resistors

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1 (MR)	Master reset input	Active-LOW asynchronous control: forces all Qn = LOW regardless of CP or Dn state
2 (Q0), 5 (Q1), 6 (Q2), 9 (Q3), 12 (Q4), 15 (Q5), 16 (Q6), 19 (Q7)	Flip-flop outputs	Complementary to stored Dn value after valid CP edge; drive standard CMOS loads
3 (D0), 4 (D1), 7 (D2), 8 (D3), 13 (D4), 14 (D5), 17 (D6), 18 (D7)	Data inputs	Sampled on CP rising edge if t_su/t_h met; high-impedance when not latched
10 (GND)	Ground reference	0 V return path for all internal circuitry and I/O; must be low-impedance
11 (CP)	Clock input	Rising-edge sensitive; triggers simultaneous sampling of all eight D inputs
20 (VCC)	Supply voltage	2.0–6.0 V DC; powers core logic and output drivers; bypass capacitor required

Key Features

Feature	Design Value
Wide supply range	2.0 V to 6.0 V operation enables compatibility with 3.3 V and 5 V systems without level shifters
High noise immunity	Typical VIH/VIL margins ≥ 1.35 V at 4.5 V - rejects transient coupling in noisy industrial environments
Latch-up robustness	Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up under transient overcurrent
ESD protection	HBM > 2000 V, CDM > 1000 V - reduces handling sensitivity during assembly and field service
Multiple package options	TSSOP20 (SOT360-1), SO20 (SOT163-1), DHVQFN20 (SOT764-1) - supports density, thermal, and assembly requirements

Applications

Microcontroller I/O Expansion

Industrial Bus Interface

Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by latching parallel data from SPI-shifted bytes.

IC Role / Device Role / Timing Role: Synchronous 8-bit data register; captures SPI-shifted byte on CP edge synchronized to MCU clock domain.

Use Value: Eliminates need for software bit-banging; ensures deterministic timing with t_pd ≤ 30 ns and t_su/t_h compatible with 20 MHz SPI clocks.

Use Scenario: Isolating and synchronizing Modbus RTU data lines between RS-485 transceiver and microcontroller UART.

IC Role / Device Role / Timing Role: Glue logic register buffering RX/TX data; decouples transceiver timing jitter from MCU UART sampling.

Use Value: Prevents metastability via controlled clock-domain crossing; MR pin enables hardware-initiated bus reset without firmware intervention.

Programmable Logic Control (PLC) Input Latching

Digital Test Equipment Pattern Generation

Use Scenario: Capturing 8-channel discrete sensor inputs (limit switches, proximity sensors) in a DIN-rail PLC module.

IC Role / Device Role / Timing Role: Parallel input latch; samples all 8 channels simultaneously on system clock edge for deterministic scan-cycle timing.

Use Value: Guarantees atomic read of all inputs; MR allows emergency clear of latched states during fault recovery sequences.

Use Scenario: Generating stable 8-bit stimulus patterns for IC functional testing using FPGA-controlled clocking.

IC Role / Device Role / Timing Role: Output pattern register; holds test vectors until next CP edge, enabling precise timing alignment with DUT clock.

Use Value: Delivers sub-15 ns output skew across all 8 bits; supports test frequencies up to 30 MHz (f_max = 24 MHz at 125 °C).

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
74HCT273PW	TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and package	Better interoperability with legacy 5 V TTL logic; slightly higher ICC at VCC = 5.5 V	Select when interfacing to 5 V TTL sources without level translation
SN74HC273PWR	Same 74HC logic; TI-manufactured; identical electrical specs but different thermal derating (8.7 mW/K above 105 °C)	Validated for TI-specific reference designs; minor footprint variation in leadform	Choose for TI ecosystem alignment or dual-sourcing where TI qualification is mandated

Compared with 74HC273PW/S911118, the 74HCT273PW offers guaranteed TTL input thresholds for mixed-logic systems, while SN74HC273PWR provides second-source assurance with equivalent functionality but distinct thermal management behavior above 105 °C.

Availability

74HC273PW/S911118 is available at Aetrix Electronics and suitable for industrial control systems, programmable logic controllers, and embedded instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC273PW/S911118 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.

The 74HC273 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in space-constrained, thermally demanding environments.

FAQ

What is the absolute maximum supply voltage for 74HC273PW/S911118?

The absolute maximum V_CC is +7.0 V, per IEC 60134 limiting values. Operation above 6.0 V violates recommended conditions and risks accelerated parametric drift or permanent damage. Continuous operation must remain within 2.0 V to 6.0 V, with thermal derating applied above 100 °C ambient in TSSOP20 package.

Can the master reset (MR) pin be left floating?

No - MR is an active-LOW input with no internal pull-up. Leaving it floating risks unintended resets due to noise coupling. It must be actively driven HIGH (via pull-up resistor or logic signal) when not asserting reset. A 10 kΩ pull-up to V_CC is commonly used in industrial designs for noise margin.

Does 74HC273PW/S911118 support hot insertion?

No - the device lacks hot-swap protection circuitry. Applying V_CC while signals are present may exceed input clamping current limits (±20 mA) or violate absolute maximum ratings. Power sequencing - V_CC established before applying CP, Dn, or MR signals - is mandatory per datasheet recommendations.

How does input capacitance affect high-speed operation?

CI = 3.5 pF per input pin contributes directly to dynamic power (P_D = C_PD × V_CC² × f_i). At 20 MHz with V_CC = 4.5 V, total input switching current exceeds 1 mA - requiring proper PCB layout (short traces, ground plane) and local decoupling to maintain signal integrity and avoid supply droop.

74HC273PW/S911118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HC

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Packaging:: Bulk

Product Status:: Active

Function:: Master Reset

Type:: D-Type

Output Type:: Non-Inverted

Number of Elements:: 1

Number of Bits per Element:: 8

Clock Frequency:: 122 MHz

Max Propagation Delay @ V, Max CL:: 26ns @ 6V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 5.2mA, 5.2mA

Voltage - Supply:: 2V ~ 6V

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

74HC273PW/S911118 FAQ

1.How can I place an order for 74HC273PW/S911118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC273PW/S911118 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 74HC273PW/S911118 reliable?

The price and inventory of 74HC273PW/S911118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC273PW/S911118 is usually 5 days.

3.What payment methods are accepted for 74HC273PW/S911118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC273PW/S911118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC273PW/S911118?

74HC273PW/S911118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC273PW/S911118 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 74HC273PW/S911118?

For technical support, including 74HC273PW/S911118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC273PW/S911118 requirements.

6.How does Aetrix verify that 74HC273PW/S911118 is sourced from the original manufacturer or authorized distributors?

All 74HC273PW/S911118 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 74HC273PW/S911118 meets industry standards.

7.What is the process for return or replacement of 74HC273PW/S911118?

All 74HC273PW/S911118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC273PW/S911118, 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 74HC273PW/S911118 part is unused and in its original packaging.

Return procedure for 74HC273PW/S911118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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