Nat Semi MM14538BCN Dual Precision Monostable DIL16

Manufactureed by National Semiconductor - MM14538BCN (CD14538) - DIL16 through hole package

DESCRIPTION

The MM14538BCN 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.

It may be triggered from either edge of an input pulse, and produces an accurate output pulse over a wide range of widths, the duration and accuracy of which are determined by the external timing
components, C_X and R_X. Output Pulse Width T = R_X x C_X (secs)
R_X = Ohms
C_X = Farads

FEATURES

• Wide supply voltage range: 3.0V to 15V
• High noise immunity: 0.45 V_CC (typ.)
• Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS
• New formula: PW_OUT = 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