BA823 Datasheet, PDF (1/7 Pages) Rohm – 8-bit, serial IN, parallel OUT driver

Standard ICs
8-bit, serial IN, parallel OUT driver
BA823 / BA823F
The BA823 and BA823F are 8-bit serial input, parallel output drivers. These monolithic ICs were developed as
drivers for thermal printing heads, LED character displays, and other similar applications.
•^Applications
Thermal printing head drivers
LED character display drivers
•^Features
1) Can drive up to 200 mA.
2) Controlling the strobe terminal with the drive timing
pulse enables current to be reduced when drive is
not being carried out.
3) Using the data output terminal for the next data input
enables cascade connections.
4) The digital ground and power ground are separated.
5) TTL and CMOS drive possible.
•^{Block diagram}
STROBE INPUT _S 1
DATA INPUT DI 15
SHIFT PULSE C 2
O0
O1
O2
O3
O4
O5
O6
O7
12 11 10
9
8
7
6
5
16 VCC
DQ DQ DQ DQ DQ DQ DQ DQ
C
C
C
C
C
C
C
C
3 DATA OUTPUT Do
13 GND1
4 GND2
14 GND
(Dig)
•^{Absolute maximum ratings (Ta = 25°C)}
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
7.0^∗1
V
BA823
Power dissipation
Pd
BA823F
550^∗2
mW
500^∗3
Input voltage
VIN Max.
+ 0.3 ~ + 6.0
V
Operating temperature
Topr
– 20 ~ + 75
°C
Storage temperature
Tstg
– 55 ~ + 125
°C
∗1 O0 to O7 output pins are 34V (max.).
∗2 Reduced by 5.5mW for each increase in Ta of 1°C over 25°C.
∗3 Reduced by 5mW for each increase in Ta of 1°C over 25°C.
1