1. General description

74AHC1G4215 is a 15-stage divider and oscillator. It consists of a chain of 15 flip-flops. Each

flip-flop divides the frequency of the previous flip-flop by two, consequently the 74AHC1G4215

counts up to 215 = 32768. 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 32768.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

• 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

• ESD protection:

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

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

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

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