3

Standard ICs

BA225 / BA225F / BA235 / BA226 / BA226F / BA236

1.010

1.000

C = 0.01

µF

R = 100k

Ω

0.990

0.980

1.005

0.995

0.985

0

04

12

820

16

Fig. 4 Power supply voltage vs.

delay time

10

0.001

1.0

0.1

0.01

TIMING PERIOD: T (ms)

0.01

0.1

10

1100

Fig. 6 One-shot time

characteristics

AMBIENT TEMPERATURE: Ta (

°C)

– 25

0

50

25

75

C = 0.01

µF

R = 100k

Ω

1.010

1.015

1.020

1.000

0.990

0.980

1.005

0.995

0.985

Fig. 5 Temperature vs.

delay time

CR

mA

PG

BA225

BA225F

BA235

GND

5mA

5mA

D.V

µA

D.V

Counter

OUT

IN

OFF

ON

0.1

µF

100k

Ω

Fig. 7

(1) Timing capacitors (Pins 2 and 6)

Connected between these pins and the ground (GND),

this capacitor determines the one-shot period. We rec-

ommend using a capacitor with a value greater than

1000pF. The one-shot cycle is determined by T = 1 / 2

C • R.

(2) Timing resistor (Pins 2 and 6)

Connected to the power supply line, these resistors

determine the one-shot period. The timing capacitor is

charged through this resistor. The recommended range

for the timing resistor is 10k

Ω to 1MΩ.

(3) Power supply capacitor (Pin 8)

Connect a 0.02

µF capacitor between the power supply

pin and the ground (GND) so as to prevent malfunction

resulting from a rise in the impedance of the power

supply line.

(4) Load (Pins 1 and 7)

A load of up to 5mA can be accommodated for both the

inflow current and the outflow current.