Nexperia USA Inc. 74AHC1G4208GWH

Overview

74AHC1G4208GWH from Nexperia is an 8-stage binary counter and crystal 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 low-power clock divider in timing chains or as a self-contained oscillator when paired with external crystal and load capacitors - used in industrial control timing, sensor sampling clocks, and mixed-voltage microcontroller clock conditioning.

For engineers reviewing the 74AHC1G4208GWH datasheet, 74AHC1G4208GWH pinout, 74AHC1G4208GWH application, or 74AHC1G4208GWH equivalent, key selection criteria include its 256× fixed division ratio, X1/X2 oscillator interface capability, overvoltage tolerance for level translation, and guaranteed operation at 100 MHz (VCC = 3.3 V) and 125 MHz (VCC = 5 V).

Technical Context

The device implements a synchronous 8-bit ripple counter using eight cascaded D-type flip-flops, advancing on the negative-going edge of X1. Its single inverting stage between X1 and X2 supports crystal oscillation or external clock buffering - with X2 left floating when used as a buffer.

It operates across 2.0 V–5.5 V supply range, features CMOS-level static power dissipation (<10 μA typical ICC), and maintains full functionality under mixed-voltage conditions due to overvoltage-tolerant inputs referenced to GND, not VCC.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) plastic thin shrink small outline package, 5-lead, body width 1.25 mm, pin pitch 0.65 mm, lead coplanarity ≤0.1 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC1G4208GW and CD4060BM96, the 74AHC1G4208GWH uniquely combines 256× fixed division, crystal oscillator capability, overvoltage tolerance, and +125 °C rating in a 5-pin TSSOP - making it optimal for space-constrained, high-reliability timing applications where precision and mixed-voltage robustness are critical.

Availability

74AHC1G4208GWH is available at Aetrix Electronics and suitable for industrial PLC timing, microcontroller clock conditioning, and sensor sampling synchronization requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G4208GWH 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, reliable logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.

The 74AHC1G4208 belongs to Nexperia's AHC logic family - designed for low-power, high-speed, mixed-voltage timing applications in industrial, automotive, and consumer electronics where precision division and oscillator integration are essential.

FAQ

Can the 74AHC1G4208GWH operate as both a crystal oscillator and a clock divider simultaneously?

No. The device operates in one of two mutually exclusive modes: either as a crystal oscillator (with X1 and X2 connected to crystal and load capacitors) or as a clock divider (with X1 driven by an external clock and X2 left floating). The internal inverter cannot serve both roles concurrently due to signal path isolation requirements.

What is the minimum recommended crystal load capacitance for stable oscillation with 74AHC1G4208GWH?

The datasheet specifies C1 = 22 pF to 37 pF and C2 = 100 pF for typical crystal oscillator operation. Minimum stable load capacitance is 22 pF on the X1 side; using lower values risks start-up failure or frequency drift, especially at temperature extremes or low VCC.

Does the 74AHC1G4208GWH support asynchronous reset or enable control?

No. The device has no dedicated reset, enable, or clear pins. It is a purely combinational counter chain with no control logic - division begins immediately upon valid clock edges at X1, and state cannot be forced or halted externally.

Is the Q output phase-aligned with the X1 input, and what is the typical skew?

Q is phase-delayed relative to X1 by eight propagation stages. At VCC = 3.3 V and CL = 15 pF, typical X1→Q delay is 19 ns; skew is deterministic and monotonic, with no duty-cycle distortion - output remains 50% duty cycle regardless of input duty cycle due to synchronous division architecture.