iC-MD RS-422 QUADRATURE
ENCODER RECEIVER/COUNTER WITH SPI AND BiSS
Rev A1, Page 5/23
ELECTRICAL CHARACTERISTICS
Operating Conditions: VDD = 3 . . . 5.5 V, Tj = -40 . . . 125 °C, unless otherwise noted.
Item Symbol
No.
Parameter
Conditions
Unit
Min.
Typ.
Max.
RS-422 Configuration: Differential Inputs AP, AN, BP, BN, CP, CN
A01
Vcm()
Common Mode Voltage Range
TTL = 0, LVDS = 0
VDD = 4.5 . . . 5.5 V
VDD = 3 . . . 5.5 V
0
0
3
1.5
V
V
A02
Vd()
Differential Input Threshold
Voltage
TTL = 0, LVDS = 0,
V() = V(AP) - V(AN)
V() = V(BP) - V(BN)
V() = V(CP) - V(CN)
-300
300
mV
A03
Vhys()
Differential Input Hysteresis
TTL = 0, LVDS = 0,
Vhys() = Vth()hi-Vth()lo
(guaranteed by design)
2.5
10
2
mV
TTL Configuration: Input AP, AN, BP, BN, CP, CN
B01
Vt()hi
Input Threshold Voltage hi at
AP, AN, BP, BN, CP, CN
TTL = 1, LVDS = 0
TTL = 1, LVDS = 0
TTL = 1, LVDS = 0
TTL = 1, LVDS = 0
V
V
B02
Vt()lo
Input Threshold Voltage lo at
AP, AN, BP, BN, CP, CN
0.8
150
35
B03 Vt()hys
B04 Rpd()
Input Hysteresis at
AP, AN, BP, BN, CP, CN
300
50
mV
kΩ
Pull-Down Resistor
65
LVDS Configuration: Differential Inputs AP, AN, BP, BN, CP, CN
C01
Vin()
Input Voltage Range
TTL = 0, LVDS = 1
VDD = 4.5 . . . 5.5 V
VDD = 3 . . . 5.5 V
0.8
0.8
3
1.5
V
V
C02
Vd()
Differential Input Threshold
Voltage
TTL = 0, LVDS = 1
V() = V(AP)-V(AN)
V() = V(BP)-V(BN)
V() = V(CP)-V(CN)
-200
200
mV
C03
Vhys()
Differential Input Hysteresis
TTL = 0, LVDS = 1
1.2
8
mV
Vhys() = Vth()hi-Vth()lo
(guaranteed by design)
ICHAUS [ IC-HAUS GMBH ]
