Nexperia USA Inc. 74AHC1G4212GW-Q10H

Overview

74AHC1G4212GW-Q10H from Nexperia is an automotive-qualified 12-stage binary divider and oscillator IC with overvoltage-tolerant X1 input (up to 5.5 V), 2.0–5.5 V supply range, -40 °C to +125 °C operation, and 4096:1 frequency division ratio. It functions as a crystal oscillator or external clock buffer, advancing on the negative-going edge of X1, and delivers Q output at f_IN/4096 - used in automotive infotainment clock tree synchronization and ECU timing reference generation.

For engineers reviewing the 74AHC1G4212GW-Q10H datasheet, 74AHC1G4212GW-Q10H pinout, 74AHC1G4212GW-Q10H application, or 74AHC1G4212GW-Q10H equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, TSSOP5 package compatibility, 125 MHz max input frequency at 3.3 V, overvoltage tolerance enabling mixed-voltage level translation, and guaranteed propagation delay ≤68 ns (CL = 50 pF, VCC = 3.3 V).

Technical Context

This device integrates a 12-stage synchronous ripple counter chain where each D-type flip-flop divides by two, yielding exact 2¹² = 4096 division. The X1–X2 inverting stage operates either as a Pierce crystal oscillator (with external crystal and load capacitors) or as a high-impedance input buffer - when used as buffer, X2 must be left floating to avoid loading.

Its overvoltage-tolerant X1 input (rated to 5.5 V independent of VCC) enables direct interfacing with 5 V logic in 3.3 V systems without external level shifters. Timing advances strictly on the falling edge of X1, and static characteristics guarantee VIH ≥ 2.4 V (VCC = 3.0 V) and VOL ≤ 0.55 V (IO = 8 mA, VCC = 4.5 V), ensuring robust noise immunity in automotive EMI environments.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) plastic thin shrink small outline package: 5-pin, 1.25 mm body width, 0.65 mm lead pitch, exposed pad not present. RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-stage divider and oscillator applications.

Compared with 74LVC1G4212GW-Q100, this part offers superior noise immunity and wider supply margin at 2.0 V; versus SN74LV4040APWR, it integrates oscillator functionality and saves two external components but occupies smaller TSSOP5 footprint.

Availability

74AHC1G4212GW-Q10H is available at Aetrix Electronics and suitable for automotive ECU timing reference, ADAS sensor synchronization, and BCM wake-up timer applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G4212GW-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 leading Dutch semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for automotive, industrial, and consumer markets.

This device belongs to the AHC automotive logic family, designed specifically for robust, low-power timing and signal conditioning in harsh automotive environments - emphasizing AEC-Q100 qualification, wide temperature operation, and mixed-voltage interoperability.

FAQ

Can 74AHC1G4212GW-Q10H operate with a 1.8 V supply?

No. The absolute minimum supply voltage is 2.0 V per the Recommended Operating Conditions table. At 1.8 V, VIH threshold (≥2.4 V at VCC = 3.0 V) cannot be met, and static characteristics such as VOH and VOL are not guaranteed. Use 74LVC1G4212GW-Q100 for 1.65 V operation.

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

Connecting X2 to any load - including pull-up/down resistors or other inputs - degrades oscillator start-up reliability and may cause erratic counting or failure to oscillate. The X1–X2 inverter requires high-impedance termination at X2 to maintain correct gain and phase conditions for stable oscillation or clean buffering.

Is the 4096:1 division ratio programmable or fixed?

It is fixed and hardwired. The internal chain consists of 12 cascaded D-type flip-flops with no enable, reset, or bypass controls. Output Q is always f_X1/4096, with no provision for intermediate taps or ratio adjustment. For programmable division, consider a dedicated clock generator IC.

Does this device support crystal frequencies above 10 MHz?

Yes - the maximum input frequency at X1 is 125 MHz (at VCC = 3.3 V) and 100 MHz (at VCC = 5.0 V). Crystal oscillator operation is typically limited by external crystal parameters and layout; the IC itself supports fundamental-mode crystals up to at least 20 MHz and overtone crystals with appropriate matching networks.