MAX14890E Datasheet, PDF (3/30 Pages) Maxim Integrated Products – Overvoltage and Undervoltage Fault Detection

MAX14890E
Incremental Encoder Interface for RS-422,
HTL, and TTL with Digital Inputs
Electrical Characteristics (continued)
(V_CC = 5V±10%, VL = 1.62V to V_CC, T_A = -40°C to +125°C unless otherwise noted. Typical values are at V_CC = 5V, V_L = 3.3V,
TA _{= +25°C.) (Notes 2, 3 )}
PARAMETER
SYMBOL
CONDITIONS
Low Differential Voltage Fault
V_{TH_DFP} 0V ≤ V_CM ≤ +24V, Positive
Threshold
Single-Ended Input Fault
Threshold
V_{TH_DFN}
V_{TH_SEN}
0V ≤ V_CM ≤ +24V, Negative
Negative
SINGLE-ENDED HTL RECEIVERS (RxA, RxB, RxZ)
Input Logic High Voltage
V_{IH_SE}
HITH is low
HITH is high
Input Logic Low Voltage
V_{IL_SE}
HITH is low
HITH is high
Input Hysteresis
ΔV_{ITH_SE}
Input Current (A, B, Z)
Input Current (A, B, Z)
Fault Threshold Voltage
I_{_HTL}
I_{_HTL}
V_{TH_HTLF}
V_CC = 0V or normally powered, V_IN = 24V
V_CC = 0V or normally powered, V_IN = 24V
TTL RECEIVERS (RxA, RxB, RxZ, RxY, RxD2, RxD3)
Input High Voltage
V_{IH_TTL} TTL mode
Input Low Voltage
V_{IL_TTL} TTL mode
Input Hysteresis
V_{HY_TTL} TTL mode
Input Current (A, B, Z, DIY, DI2,
DI3)
I_{_TTL}
TTL mode, V_CC = 0V or 5V, V_IN = 5V
Input Current (A, B, Z, Y)
Fault Threshold Voltage
I_{_TTL}
V_{TH_TTLF}
TTL mode, V_CC = 0V or 5V, V_IN = 5V
Negative
Positive
DIGITAL INPUT RECEIVERS (DI2, DI3, RxY, RxZ)
Input High Voltage
Input Low Voltage
Input Hysteresis
V_{IH_DI}
V_{IL_DI}
V_{HY_DI}
DI mode, HITH is high or low
DI mode, HITH is high or low
DI mode, HITH is high or low
MIN
+1.2
-2.0
-18
8
13
-40
-40
-18
2.0
-40
-18
+15
8
-40
TYP
270
0.53
1.2
MAX
+2.0
-1.2
-15
UNITS
V
V
40
V
40
6
V
11
mV
460
μA
460
μA
-15
V
40
V
0.8
V
V
85
μA
85
-15
V
+18
40
V
5.5
V
V
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