Nexperia USA Inc. 74AHC1G4208GW-Q10H

Overview

74AHC1G4208GW-Q10H from Nexperia is an automotive-grade 8-stage binary divider and oscillator IC with overvoltage-tolerant X1 input (up to 5.5 V), 256:1 frequency division ratio, TSSOP5 package, and operation across -40 °C to +125 °C. It functions as a crystal oscillator or external clock buffer, delivering Q output at f_X1/256, advancing on the negative edge of X1, and enabling voltage-level translation in mixed-supply systems.

For engineers reviewing the 74AHC1G4208GW-Q10H datasheet, 74AHC1G4208GW-Q10H pinout, 74AHC1G4208GW-Q10H application, or 74AHC1G4208GW-Q10H equivalent, this device serves as a compact, AEC-Q100 qualified timing solution for automotive infotainment clocks, CAN/LIN bus synchronization, and microcontroller peripheral clock scaling where low-power, wide-V_CC (2.0–5.5 V), and input overvoltage tolerance are critical.

Technical Context

This device implements a synchronous 8-bit ripple counter using eight cascaded D flip-flops, each dividing by two, yielding a total division factor of 256. The X1-to-X2 path operates as an inverting oscillator stage with configurable crystal or buffered external clock input.

Its overvoltage-tolerant X1 input (−0.5 V to 5.5 V) enables direct interfacing with 5 V logic while powered from 3.3 V or 2.5 V supplies, eliminating level-shifter components. Propagation delay from X1 to Q is 14–49 ns depending on V_CC and load, supporting input frequencies up to 125 MHz at V_CC = 3.3 V and 100 MHz at V_CC = 5.0 V under full temperature range.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) plastic thin shrink small outline package: 5-pin, 1.25 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-stage divider and oscillator applications.

Compared with 74LVC1G4208GW-Q100, this part offers wider supply margin and higher output drive but consumes more quiescent current; versus SN74LVC1G14DBVR, it integrates full 8-stage logic in one die, reducing BOM count and timing uncertainty in automotive timing chains.

Availability

74AHC1G4208GW-Q10H is available at Aetrix Electronics and suitable for automotive infotainment systems, engine control units, and ADAS camera modules requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for 74AHC1G4208GW-Q10H 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 high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-grade components and advanced packaging.

This device belongs to Nexperia's AHC automotive logic family, designed specifically for timing-critical automotive subsystems requiring robustness, wide supply range, and seamless integration with legacy and next-generation microcontrollers.

FAQ

Can 74AHC1G4208GW-Q10H operate with a 1.8 V supply?

No. The absolute minimum recommended V_CC is 2.0 V per Table 5. At 1.8 V, VIH and VOL specifications fall outside guaranteed operating conditions, risking logic threshold violations and unreliable counting. For 1.8 V systems, consider the 74LVC1G4208GW-Q100 variant instead.

What happens if X2 is not left floating when used as a buffer?

If X2 is externally driven while configured as a buffer, contention occurs between the internal inverter output and the external signal, potentially causing excessive current, logic malfunction, or accelerated device wear. The datasheet explicitly requires X2 to remain unconnected in buffer mode to prevent damage and ensure correct Q output behavior.

Is the 256:1 division ratio programmable or fixed?

The division ratio is fixed at 256:1 by the internal 8-stage flip-flop chain. No configuration pins, registers, or external controls exist to alter the ratio. This hardwired architecture guarantees deterministic timing, eliminates configuration firmware overhead, and prevents metastability risks associated with reprogrammable dividers.

How does the device handle crystal start-up time?

Start-up time depends on external crystal parameters and bias resistor R1 (typically 2.2 kΩ). With a standard 32.768 kHz tuning-fork crystal and 22 pF load capacitors, typical start-up is <100 ms at 25 °C. The internal inverter provides sufficient gain margin to sustain oscillation across temperature and aging, as validated in AEC-Q100 stress testing.