1
Standard ICs
8-bit shift register and latch driver
BU2114 / BU2114F
The BU2114 and BU2114F are CMOS ICs with low power consumption, and are equipped with an 8-bit shift register
latch. Data in the shift register can be latched asynchronously. The outputs (O1 to O8) are open drain outputs
(because there is no protection diode, a maximum voltage above VDD, of up to 7V, can be applied), and one output
can drive 36 mA. A total output of up to 150 mA can be driven (when using static operation).
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Applications
These are designed for a wide range of applications in microcomputer peripheral circuits, such as in industrial equip-
ment, office telephones, audio visual equipment, and expansion input and output boards.
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Features
1) The CMOS configuration enables low power con-
sumption.
2) Open drain output.
3) Latch to 8-bit shift register provided, enabling drive
of up to 150mA. (ISINK = 36mA)
4) Cascade connections possible.
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Absolute maximum ratings (unless otherwise noted, Ta = 25°C)
Parameter Symbol Limits Unit
Applied voltage
Input voltage
Operating temperature
Storage temperature
Input protection diode current
Power dissipation
VDD – 0.3 ~ + 7.0 V
VIN – 0.3 ~ VDD0.3 V
Topr – 25 ~ + 75 °C
Tstg – 55 ~ + 150 °C
ID – 20 mA
BU2114
Pd
1100
* 1
mW
BU2114F 400
* 2
*
1 Power dissipation is reduced by 8.8mW for each increase in Ta of 1°C over 25°C.
*
2 Power dissipation is reduced by 3.2mW for each increase in Ta of 1°C over 25°C.
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Recommended operating conditions (unless otherwise noted, Ta = 25°C)
sNot designed for radiation resistance.
Parameter Symbol Min. Typ. Max. Unit Conditions
Recommend voltage
Input voltage
Output voltage
VDD 4.5 5.0 5.5 V
VIN 0 — VDD V SIN, CK, LATCH, EN, RST
VOUT 0 — VDD V SOUT