Home | Back

Single comparator used in Commodore and Amiga equipment

IC numbers

LM710, LM311, µA311

IC function

Single comparator

Related components

Quad comparator

Component documentation

IC number	Manufacturer	Documentation
LM710		Not available
LM311	Texas Instruments	Web page, Datasheet (PDF)
	National Semiconductor (now Texas Instruments)	Web page, Datasheet (PDF)
µA311	Fairchild Semiconductor	Not available

Component versions

IC number	Package	CBM part number	CBM part description	Replacement parts
LM710	14-pin DIP	390040-01	Single comparator LM710
LM331, µA311	8-pin DIP	901523-04	311 OP Amp	LM331 available from: Conrad Electronic LM331N available from: Conrad Electronic LM331N available from: Conrad Electronic

Positions

Device	Position	Component	Package
A1300	U7	LM710	DIP
SX64 FDD board	UK4	LM331, µA311	DIP
2040 analog board	UA4	LM331, µA311	DIP
2031 HP	U2R	LM331, µA311	DIP
2031 LP	UH4	LM331, µA311	DIP
1540, 1541	UH4	LM331, µA311	DIP
1541 CR or A board	UE4	LM331, µA311	DIP
8050, 8250 analog board assy 8050006, 8250023	U1	LM331, µA311	DIP
8050, 8250 analog board assy 8050044	U19	LM331, µA311	DIP

Pinout LM710

Pin	Function
1	NC
2	GND
3	+IN
4	-IN
5	NC
6	V-
7..8	NC
9	OUT
10	NC
11	V+
12..14	NC

Pinout LM311, µA311

Pin	Function
1	Ground
2	Input 1
3	Input 2
4	V-
5	Balance
6	Balance / Strobe
7	Output
8	V+

Copyright © 2003-2010 Ronald van Dijk - All rights reserved
Last update: 8 August 2010