Datasheet

LT1785/LT1785A/
LT1791/LT1791A
9
178591fd
For more information www.linear.com/LT1785
LT1785 Transmitting
INPUTS OUTPUTS
RE DE DI A B RO
0 1 0 0 1 0
0 1 1 1 0 1
1 0 X Hi-Z Hi-Z Hi-Z
1 1 0 0 1 Hi-Z
1 1 1 1 0 Hi-Z
LT1785 Receiving
INPUTS OUTPUT
RE DE DI A-B RO
0 0 X ≤ –200mV 0
0 0 X ≥ 200mV* 1
0 0 X Open 1**
1 0 X X Hi-Z
* ≥ 0mV for LT1785A
** 1 for LT1785A; 1 or 0 for LT1785
LT1791
INPUTS OUTPUTS
RE DE DI A-B Y Z RO
0 0 X ≤ –200mV Hi-Z Hi-Z 0
0 0 X ≥ 200mV* Hi-Z Hi-Z 1
0 0 X Open Hi-Z Hi-Z 1**
0 1 0 ≤ –200mV 0 1 0
0 1 0 ≥ 200mV* 0 1 1
0 1 0 Open 0 1 1**
0 1 1 ≤ –200mV 1 0 0
0 1 1 ≥ 200mV* 1 0 1
0 1 1 Open 1 0 1**
1 0 X X Hi-Z Hi-Z Hi-Z
1 1 0 X 0 1 Hi-Z
1 1 1 X 1 0 Hi-Z
* ≥ 0mV for LT1791A
** 1 for LT1791A; 1 or 0 for LT1791
FuncTion Tables
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