Nexperia USA Inc. 74HC1G125GW-Q100H

Overview

74HC1G125GW-Q100 from Nexperia is a single-channel 3-state bus buffer/line driver with CMOS input levels, rated for automotive Grade 1 operation (−40 °C to +125 °C), 2.0–6.0 V supply range, and TSSOP5 (SOT353-1) package. It features symmetrical output impedance, high noise immunity, and input clamp diodes enabling overvoltage-tolerant interfacing-used in automotive body control modules for isolated signal routing between microcontrollers and peripheral drivers.

For engineers reviewing the 74HC1G125GW-Q100 datasheet, 74HC1G125GW-Q100 pinout, 74HC1G125GW-Q100 application, or 74HC1G125GW-Q100 equivalent, key selection criteria include its AEC-Q100 qualification, 3-state enable timing (t_en/t_dis ≤ 38 ns at V_CC = 4.5 V), input voltage compatibility (VIH ≥ 3.15 V @ V_CC = 4.5 V), and low ICC (≤ 20 μA) for always-on vehicle networks.

Technical Context

This device implements a non-inverting buffer with active-low 3-state output enable (OE), supporting bidirectional bus isolation in automotive serial communication interfaces and sensor signal conditioning paths. Its CMOS input stage accepts rail-to-rail logic levels, while the output stage delivers balanced rise/fall times and high-impedance OFF-state leakage < 10 μA.

The logic function follows a strict truth table: when OE = LOW, Y = A; when OE = HIGH, Y = high-impedance (Z). Propagation delay (A→Y) is 10 ns typical at V_CC = 4.5 V and CL = 50 pF, with enable/disable delays tightly matched (t_en = t_dis = 9–12 ns typical).

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) plastic thin shrink small outline package, 5-lead, 1.25 mm body width, 0.65 mm pitch, 1.1 mm height - optimized for space-constrained automotive ECUs and ADAS sensor nodes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC1G125GW-Q100, the 74HCT1G125GW-Q100 offers improved noise margin for TTL sources but sacrifices some low-V_CC flexibility; SN74LVC1G125DBVR provides smaller footprint and lower voltage support but lacks automotive qualification and thermal rating.

Availability

74HC1G125GW-Q100 is available at Aetrix Electronics and suitable for automotive body control, instrument cluster, power distribution, and ADAS sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC1G125GW-Q100 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, high-reliability standard products for automotive, industrial, and consumer markets, with manufacturing rooted in process technology leadership and quality rigor.

This device belongs to Nexperia's AEC-Q100-qualified 74HC logic portfolio, engineered specifically for robust signal buffering in automotive electronic control units where thermal stability, ESD resilience, and long-term supply continuity are mandatory.

FAQ

What is the maximum allowable supply voltage for continuous operation?

The absolute maximum supply voltage is +7.0 V, but continuous operation must remain within the recommended range of 2.0 V to 6.0 V. Exceeding 6.0 V risks accelerated parametric drift and reduced lifetime, especially at elevated temperatures. The device is not rated for 7 V operation in production systems.

Can this buffer drive a 100 pF capacitive load reliably?

No - the datasheet specifies dynamic characteristics only up to 50 pF (CL = 50 pF). At 100 pF, propagation delay increases beyond 25 ns and output rise/fall times degrade significantly, potentially violating setup/hold timing in synchronous interfaces. External series termination or a higher-drive buffer is required for >50 pF loads.

Is the GND pin electrically tied to the die substrate or exposed pad?

The SOT353-1 package has no exposed thermal pad; Pin 3 (GND) is the sole ground connection for both logic reference and power return. It connects directly to the die substrate and must be routed to a low-impedance ground plane to maintain noise immunity and thermal stability across the full −40 °C to +125 °C range.

Does the 3-state disable function guarantee zero current draw from V_CC?

No - supply current in 3-state (OE = HIGH) remains ≤ 20 μA at V_CC = 6.0 V and +125 °C, per static characteristics Table 7. This is not zero, but sufficiently low for ultra-low-power sleep modes in always-on vehicle networks where total quiescent budget is < 100 μA.