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BU8315S, BU8317KV, BU831RP

Table of contents:
Info of BU8315S
Info of BU8317KV
Info of BU831RP

BU8315S, BU8317KV, BU831RP Selling Leads, Datasheet

MFG:ROHM Package Cooled:TQFP D/C:QFP

BU8315S, BU8317KV, BU831RP Datasheet download

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Part Number: BU8315S

MFG: ROHM

Package Cooled: TQFP

D/C: QFP

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BU8315S General Description

The BU8315S and BU8315F are LED drivers with a flashing function.

They can be connected in series to panel PCBs in equipment such as telephones, facsimile machines, and copying machines, and to microcomputers of main PCBs, and significantly reduce the amount of wiring required.

BU8315S Maximum Ratings

Parameter		Symbol	Limits	Unit	Conditions
Power supply voltage		V_DD	7.0	V
Power dissipation	BU8315S	Pd	1050*¹	mW
Power dissipation	BU8315F	Pd	450*²	mW
Operating temperature		Topr	-25~+75
Storage temperature		Tstg	-55~+125
Input voltage		V_IN	V_SS-0.3~V_DD+0.3	V	CS,SCK,SD,RST pins
Output voltage		V_OUT	V_SS~7.0	V	L1~L14 pins
Input current		I_OUT	20	mA	L1~L14 pins

*1 Reduced by 10.5mW for each increase in Ta of 1 over 25.
*2 Reduced by 4.5mW for each increase in Ta of 1 over 25.

BU8315S Features

1) LED interface (14-bit serial in/parallel out).
2) Built-in LED automatic flashing function.

BU8315S Typical Application

Sets with operation panels, such as telephones, facsimile machines, and copying machines

BU8315S Connection Diagram

BU8317KV General Description

The BU8317KV is a large-scale integrated circuit which enables a serial input / output interface between the key input required for panel boards used in PHS systems, portable telephones, and telephone answering machines and LED and LCD control functions. It reduces the number of wiring harnesses needed between the main board in the telephone and the panel board, and takes some of the processing load off the main CPU.

BU8317KV Features

· 7 × 7 keypad matrix interface.
· 12-bit LED driver. (6 bits can also function as input pins)
· 4-column 32-segment LCD driver. (internal bias-generating resistor)
· Standby mode.
· VQFP80 package.

BU8317KV Typical Application

·PHS systems, portable telephones, telephone answering machines

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