HEF4938B Просмотр технического описания (PDF) - Philips Electronics

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производитель

HEF4938B

Dual precision monostable multivibrator

Philips Electronics 

Philips Semiconductors

Dual precision monostable multivibrator

Preliminary specification

HEF4938B

AC CHARACTERISTICS

VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns

Change in output O

pulse width over

temperature (Tamb)

Change in output O

pulse width over

VDD range 5 to 15 V

Pulse width variation

between circuits

in same package

External timing

resistor

External timing

capacitor

Input capacitance

(pin 2 or 14)

VDD

V

SYMBOL MIN. TYP.

MAX.

5

± 0,2

%

10 ∆tWO

15

± 0,2

%

± 0,2

%

∆tWO

± 1,5

%

5

10 ∆tWO

15

±1

%

±1

%

Rt = 100 kΩ

Ct = 2 nF to 10 µF

±1

%

Rt

5

−

(1)

kΩ

Ct

2000 −

no limits pF

CIN

15

pF

Note

1. The maximum permissible resistance Rt, which holds the specified accuracy of tWO, depends on the leakage current

of the capacitor Ct and the leakage of the HEF4538B.

January 1995

6

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