CHT-CG-050

www.DataSheet4U.com CISSOID The SOI design Specialist CHT-CG-050 Preliminary datasheet Version 0.4 (08/2005) Versatile High Temperature Clock Generator General Description The CHT-CG-050 is a versatile HighTemperature crystal clock generator with extended functional capabilities. The chip features a programmable crystal oscillator driver with an enable/disable control signal, an external clock input, a programmable divider chain and a programmable strength three-state output buffer. Using an external crystal, it is intended to provide reliable precision performance throughout the -30 to +225°C temperature range for supply voltages between 3V and 5V. The CHT-CG-050 can operate with crystals from 1MHz to 50MHz. The output frequency can be selected by means of a programmable divider, providing division factors of one, two, four and eight. The programmability of the crystal driver allows working with a wide range of crystals. A crystal driver enable pin (/XtalEn) is included for extremely low power applications, as well as an output enable pin (/OE). In applications requiring only a precision divider chain, where an external clock source is already present, the crystal driver may be bypassed by means of inputs ExtClkIn and ExtClkEn. Features 3V to 5V power supply Qualified from -30 to +225°C (Tj) Operational up to +250°C (Tj) Two input sources: crystal (1 to 50 MHz), external clock (DC to 50MHz) Operation from 32.768kHz crystals Programmable frequency divide...