描述 Description

The HEF4047B-Q100 is a retriggerable astable multivibrator that can be configured as either a positive-edge or negative-edge triggered monostable multivibrator. The output pulse width is programmed by selection of external components (Rt and Ct). Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 3) and is suitable for use in automotive applications.

特性 Features

General
? Automotive product qualification in accordance with AEC-Q100 (Grade 3)
? Specified from -40 °C to +85 °C

? Monostable (one-shot) or astable (free-running) operation
? True and complemented buffered outputs
? Only one external resistor and capacitor required
? ESD protection:
? MIL-STD-883, method 3015 exceeds 2000 V
? HBM JESD22-A114F exceeds 2000 V
? MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)

Monostable multivibrator
? Positive- or negative-edge triggering
? Output pulse width independent of trigger pulse duration
? Retriggerable option for pulse-width expansion
? Long pulse width possible using small RC components with external counter provision
? Fast recovery time independent of pulse width
? Pulse-width accuracy maintained at duty cycles approaching 100%
Astable multivibrator
? Free-running or gatable operating modes
? 50% duty cycle
? Oscillator output available