7

Standard ICs

BA829

400

300

200

100

0

6

121824

13.5

Fig.6 Output supplied voltage vs. output

current and range of usdoility

This product should be used within the range

indicated by the shaded section above, even

if the load includes reactance.

2000

1500

1000

1100

500

0

25

75

125

AMBIENT TEMPERATURE : Ta (

°C)

Fig.7 Ambient temperature vs.

power dissipation

85%

61%

180mA

90%

55%

46%

Ta = 70

°C

Ta = 25

°C

Ta = 50

°C

400

300

200

100

0

20

40

60

80

100

STB DUTY (%)

Fig.8 Output duty maximum output

current (when all bits are on,

duty cycle is 1Hz or higher)

The BA829 has the internal configuration shown in the

logic diagram, with the following five input pins: clock

(CLK), data (DATA), latch (LATCH), strobe (STB), and

power switch (PSW).

Data input is synchronized to the clock, with data being

read serially at the rising edge and latched at the rising

edge of the shift register after it has shifted. The

depending on the strobe input, with that pulse width

being the same as that of the strobe input.

The data output pin DOUT is used when ICs are con-

nected in cascade format, and when the output for the

last stage of the shift register appears, is connected to

the next data input pin DATA.

When these clock and strobe latches and power switch

are used in common, the output pins can be increased

by eight bits each.

In stand-by mode, the power switch is set to “L”.

DIP18

18

10

9

1

22.9

± 0.3

0.5

± 0.1

0.3

± 0.1

2.54

0

7.62