CD4538BC Dual Precision Monostable

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Ex Tax: $4.00
Brand: Twins Chip
Product Code: DIP
Availability: 100

CD4538BC Dual Precision Monostable


The CD4538BC is a dual, precision monostable multivibrator
with independent trigger and reset controls. The device
is retriggerable and resettable, and the control inputs are
internally latched. Two trigger inputs are provided to allow
either rising or falling edge triggering. The reset inputs are
active LOW and prevent triggering while active. Precise
control of output pulse-width has been achieved using linear
CMOS techniques. The pulse duration and accuracy
are determined by external components RX and CX. The
device does not allow the timing capacitor to discharge
through the timing pin on power-down condition. For this
reason, no external protection resistor is required in series
with the timing pin. Input protection from static discharge is
provided on all pins


■ Wide supply voltage range: 3.0V to 15V
■ High noise immunity: 0.45 VCC (typ.)
■ Low power TTL compatibility:
Fan out of 2 driving 74L or 1 driving 74LS
■ New formula:
PWOUT = RC (PW in seconds, R in Ohms, C in Farads)
■ ±1.0% pulse-width variation from part to part (typ.)
■ Wide pulse-width range: 1 µs to ∞
■ Separate latched reset inputs
■ Symmetrical output sink and source capability
■ Low standby current: 5 nA (typ.) @ 5 VDC
■ Pin compatible to CD4528BC


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