1. General description

74AHC1G4208-Q100 is a 8-stage divider and oscillator. It consists of a chain of 8 flip-flops.

Each flip-flop divides the frequency of the previous flip-flop by two, consequently the

74AHC1G4208-Q100 counts up to 28 = 256. The single inverting stage (X1 to X2) functions as a

crystal oscillator or an input buffer for an external oscillator. When used as a buffer the output X2

should be left floating. The frequency of the output (Q) is the frequency applied to X1 divided by

256. The divider advances on the negative-going transition of X1.

The X1 input is overvoltage tolerant. This feature allows the use of this device as a voltage level

translator in mixed voltage environments.

2. Features and benefits

? Automotive product qualification in accordance with AEC-Q100 (Grade 1)

? Specified from -40 °C to +85 °C and from -40 °C to +125 °C

? Wide supply voltage range from 2.0 V to 5.5 V

? Overvoltage tolerant inputs to 5.5 V

? High noise immunity

? CMOS low power dissipation

? Latch-up performance exceeds 100 mA per JESD 78 Class II

? ESD protection:

? HBM: ANSI/ESDA/Jedec JS-001 exceeds 2000 V

? CDM: ANSI/ESDA/Jedec JS-002 exceeds 1000 V

? MIL-STD-883, method 3015 exceeds 2000 V