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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Nexperia USA Inc. 74HCT1G125GV,125

Name: 74HCT1G125GV,125
Brand: Nexperia USA Inc.
SKU: 74HCT1G125GV,125
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HCT1G125GV,125

Manufacturer:: Nexperia USA Inc.

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: SC-74A, SOT-753

Datasheet:: 74HCT1G125GV,125.pdf

Description:: IC BUFFER NON-INVERT 5.5V SC74A

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Product details

Overview

74HCT1G125GV,125 from Nexperia is a single 3-state bus buffer/line driver with TTL-compatible inputs, 5-pin SC-74A (SOT753) package, −40 °C to +125 °C operating range, and propagation delay of 11 ns (typ) at VCC = 4.5 V. It enables bidirectional bus isolation in low-voltage digital systems such as microcontroller I/O expansion and sensor interface multiplexing.

For engineers reviewing the 74HCT1G125GV,125 datasheet, 74HCT1G125GV,125 pinout, 74HCT1G125GV,125 application, or 74HCT1G125GV,125 equivalent, key selection criteria include TTL-level input compatibility, 3-state output control timing (enable/disable times ≤ 42 ns), rail-to-rail output swing, and industrial temperature support without derating below 85 °C.

Technical Context

This device implements a non-inverting buffer with active-low 3-state enable (OE), supporting bus sharing by placing Y in high-impedance when OE = HIGH. Its TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct interfacing with legacy 5 V logic families without level shifters.

Internal CMOS circuitry delivers symmetrical output drive (IO = ±6.0 mA), balanced propagation delays (tpd = tPLH = tPHL), and low static current (ICC ≤ 20 μA at VCC = 5.5 V), enabling stable operation in power-constrained embedded nodes while maintaining noise immunity (HBM ESD > 2000 V).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - matches standard 5 V TTL and mixed-voltage system rails
Input Logic Type	TTL-compatible - accepts 0.8 V/2.0 V thresholds, eliminating external level translation
Output Drive	±6.0 mA - sufficient to drive 50 pF loads with <30 ns propagation delay
Enable Timing	ten = 10–42 ns - supports fast bus arbitration in real-time control loops
Operating Temp	−40 °C to +125 °C - qualified for under-hood, industrial PLC, and motor drive environments
ESD Rating	HBM > 2000 V - withstands handling and board-level transients without protection diodes
Power Dissipation	Ptot = 250 mW (derates 3.8 mW/K above 85 °C) - supports continuous operation in sealed enclosures

Pinout & Package

SC-74A (SOT753) plastic surface-mounted package: 5-lead, body size 3.1 mm × 1.7 mm × 1.3 mm, pitch 0.95 mm, gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1 (OE)	Active-low output enable	Drives Y to high-Z when HIGH; requires pull-up for default-disabled state
2 (A)	Data input	Accepts TTL logic levels; clamped diodes allow overvoltage-safe interfacing with current-limiting resistors
3 (GND)	Ground reference	0 V return path for all internal logic and output current; must be low-inductance connection
4 (Y)	3-state buffered output	Non-inverting replica of A when OE = LOW; high-Z impedance > 100 MΩ when disabled
5 (VCC)	Positive supply	4.5–5.5 V rail; bypass capacitor (100 nF) required within 5 mm for stable switching

Key Features

Feature	Design Value
TTL input compatibility	VIH ≥ 2.0 V / VIL ≤ 0.8 V at 5 V - interoperable with legacy 74LS and microcontroller GPIOs
Industrial temperature range	−40 °C to +125 °C - no derating needed up to 85 °C, enabling use in motor drives and power supplies
Low dynamic power	CPD = 27 pF - limits switching power to <1 mW at 1 MHz with 50 pF load
High noise immunity	VN(L) ≥ 0.4 V / VN(H) ≥ 0.4 V - rejects >400 mV of coupled noise on data lines
Clamp diode protection	IIK = ±20 mA - permits safe 5.5 V-tolerant input interfacing using series resistors

Applications

Microcontroller I/O Expansion

Sensor Data Multiplexing

Use Scenario: Expanding limited GPIO count on an ARM Cortex-M0+ MCU to drive multiple SPI peripherals.

IC Role / Device Role / Timing Role: 3-state buffer isolates shared MISO line during slave selection; OE controlled by GPIO.

Use Value: Enables deterministic bus arbitration with <42 ns disable time, preventing data contention between sensors.

Use Scenario: Aggregating analog sensor outputs (temperature, humidity, pressure) into a single ADC input via time-division multiplexing.

IC Role / Device Role / Timing Role: Buffer isolates each sensor's output amplifier from ADC input capacitance during inactive phases.

Use Value: Maintains signal integrity with <11 ns propagation delay and rail-to-rail VOH/VOL, reducing settling error by >30% vs. direct routing.

Legacy System Bus Interface

Industrial Digital I/O Module

Use Scenario: Interfacing modern 3.3 V FPGA I/O banks to legacy 5 V parallel bus peripherals (e.g., EPROM, latch).

IC Role / Device Role / Timing Role: Level-shifting buffer with TTL input thresholds accepts 5 V signals; 3-state output prevents back-driving.

Use Value: Eliminates need for discrete level translators; VIH = 2.0 V ensures reliable detection of 5 V logic HIGH even with 1 V noise margin.

Use Scenario: Isolating field-side digital inputs (24 V PLC sensors) from 5 V controller logic in DIN-rail mounted I/O modules.

IC Role / Device Role / Timing Role: Input conditioning buffer with clamp diodes and 125 °C rating survives cabinet ambient extremes.

Use Value: Withstands repeated 24 V transients via integrated clamps and ±20 mA IIK, reducing external TVS count by one per channel.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC1G125GW,125	CMOS input (VIH = 0.7×VCC), 1.65–5.5 V supply - wider voltage range but no native TTL compatibility	Preferred for 3.3 V-only systems; requires external pull-ups for 5 V bus interfacing	Select when operating below 3.3 V or needing lower ICC (<1 μA); avoid if interfacing 5 V TTL sources.
SN74LVC1G125DBVR	Same logic function, SOT-23-5 package, 1.65–5.5 V - identical CMOS input behavior, different thermal resistance (RθJA = 333 K/W)	Better suited for PCBs with limited copper area; higher junction temp rise under load	Choose for TI-design ecosystems or when SOT-23 footprint is mandated; verify thermal margin at 125 °C ambient.

Compared with 74LVC1G125GW,125 and SN74LVC1G125DBVR, the 74HCT1G125GV,125 uniquely provides native 5 V TTL input compatibility without external biasing, making it optimal for mixed-voltage industrial backplanes where legacy signal levels persist.

Availability

74HCT1G125GV,125 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, sensor data multiplexing, legacy system bus interface, and industrial digital I/O modules requiring stable component supply across extended temperature ranges.

Supply support for 74HCT1G125GV,125 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 focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HCT series targets robust 5 V digital interfacing, emphasizing TTL compatibility, wide temperature operation, and ESD resilience for mission-critical industrial control and instrumentation systems.

FAQ

What is the maximum recommended operating voltage for 74HCT1G125GV,125?

The absolute maximum supply voltage is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V per JEDEC JESD8C. Operation above 5.5 V violates the 74HCT family's TTL input threshold design and risks excessive ICC and reduced noise margin. Sustained use beyond 5.5 V voids parametric guarantees and accelerates wear-out.

Can 74HCT1G125GV,125 drive a 100 pF capacitive load reliably?

Yes, but with timing impact: at CL = 100 pF and VCC = 5 V, propagation delay increases to ~45 ns (extrapolated from 50 pF data), and rise/fall times degrade proportionally. The device maintains VOH ≥ 4.32 V and VOL ≤ 0.33 V under 6 mA load, ensuring logic integrity, though layout must minimize trace inductance to avoid ringing.

Is there a pin-compatible 74HCT1G125 variant with extended temperature range beyond +125 °C?

No - the −40 °C to +125 °C rating is the maximum qualified range for all 74HCT1G125 variants (GV/GW). Nexperia does not offer automotive-grade (AEC-Q100) or extended-temp versions of this specific SOT753-buffer. For >125 °C operation, consider discrete MOSFET-based 3-state switches or custom ASIC solutions with thermal derating analysis.

How does the input clamp diode affect interfacing with 12 V signals?

The internal clamp diodes (anode to GND, cathode to VCC) limit input voltage to −0.5 V to VCC + 0.5 V. To safely interface 12 V signals, a series current-limiting resistor must restrict IIK to ≤20 mA: R ≥ (12 V − 5.5 V)/20 mA = 325 Ω. Below this value, diode conduction causes excessive power dissipation and potential damage.

74HCT1G125GV,125 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HCT

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 1

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 6mA, 6mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-74A

74HCT1G125GV,125 FAQ

1.How can I place an order for 74HCT1G125GV,125 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HCT1G125GV,125 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 74HCT1G125GV,125 reliable?

The price and inventory of 74HCT1G125GV,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT1G125GV,125 is usually 5 days.

3.What payment methods are accepted for 74HCT1G125GV,125?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT1G125GV,125 transactions.

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4.How is shipping managed for 74HCT1G125GV,125?

74HCT1G125GV,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HCT1G125GV,125 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 74HCT1G125GV,125?

For technical support, including 74HCT1G125GV,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT1G125GV,125 requirements.

6.How does Aetrix verify that 74HCT1G125GV,125 is sourced from the original manufacturer or authorized distributors?

All 74HCT1G125GV,125 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 74HCT1G125GV,125 meets industry standards.

7.What is the process for return or replacement of 74HCT1G125GV,125?

All 74HCT1G125GV,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT1G125GV,125, 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 74HCT1G125GV,125 part is unused and in its original packaging.

Return procedure for 74HCT1G125GV,125:

1.Submit a request within 90 days.

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

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