MAX14890E Datasheet, PDF (5/30 Pages) Maxim Integrated Products – Overvoltage and Undervoltage Fault Detection

MAX14890E
Incremental Encoder Interface for RS-422,
HTL, and TTL with Digital Inputs
Switching Characteristics
(V_CC = 5V±10%, V_L = 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,
T_A = +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
RECEIVER (RxA, RxB, RxZ) (Note 4)
RS-422 Maximum Data Rate
RS-422 Receiver Propagation
Delay
DR_MAX422
t_{DPLH_422}
t_{DPHL_422}
CONDITIONS
RS-422 mode
RS-422 mode, C_L = 15pF, V_ID = ±3V,
Figures 1, 2
RS-422 Receiver Propagation De-
t_HL-
RS-422 mode, C_L = 15pF, V_ID = ±3V,
lay Skew |t_{DPLH_422} - t_{DPHL_422| SKEW_422} Figures 1, 2
RS-422 Receiver Channel-to-
Channel Skew
|t_C-
RS-422 mode, C_L = 15pF, V_ID = ±3V,
SKEW_422^{| Figures 1, 2}
Differential HTL (D-HTL) Maximum
Differential Data Rate
DR_DHTL
D-HTL mode
D-HTL Receiver Propagation
Delay
t_{DPLH_DHTL D-HTL mode, CL = 15pF, VID = ±24V,}
t_{DPHL_DHTL} ^{Figures 1, 2}
D-HTL Differential Receiver
Propagation Delay Skew
|t_{DPLH_DHTL} - t_{DPHL_DHTL|}
t_{HLSKEW_} D-HTL mode, C_L = 15pF, V_ID = ±24V,
DHTL
Figures 1, 2
MIN TYP MAX UNITS
35
Mbps
25
ns
25
0
5
ns
0
8
ns
1
Mbps
100
ns
100
0
20
ns
D-HTL Differential Receiver
Channel-to-Channel Skew
|t_{CSKEW_} D-HTL mode, C_L = 15pF, V_ID = ±24V,
DHTL^{| Figures 1, 2}
0
Single-Ended (SE-HTL) Maximum
Switching Rate
SR_SEHTL SE-HTL mode, HITH is high or low
400
8
ns
kHz
SE-HTL Receiver Propagation
Delay
t_{DPLH_}
0
SEHTL SE-HTL mode, HITH is high or low,
t_{DPHL_} ^CL ^{= 15pF, 0V ≤ V}IN ^{≤ +24V, Figures 1, 2}
0
SEHTL
SE-HTL Receiver Propagation
Delay Skew
|t_{DPLH_SEHTL} - t_{DPHL_SEHTL}|
t_{HLSKEW_}
SEHTL
SE-HTL mode,
C_L = 15pF,
0V ≤ V_IN ≤ +24V
HITH is low
HITH is high
0
0
SE-HTL Receiver Channel-to-
Channel Skew
|t_{CSKEW_} SE-HTL mode, HITH is high or low,
SEHTL^{| C}L ^{= 15pF, 0V ≤ V}IN ^{≤ +24V, Figures 1, 2}
0
TTL Maximum Switching Rate
SR_TTL TTL mode
400
TTL Receiver Propagation Delay
t_{DPLH_TTL TTL mode, CL = 15pF, 0V ≤ VIN ≤ +5V,}
t_{DPHL_TTL} ^{Figures 1, 2}
TTL Receiver Propagation Delay
Skew (t_{DPLH_TTL} - t_{DPHL_TTL})
t_{HLSKEW_} TTL mode, C_L = 15pF, 0V ≤ V_IN ≤ +5V,
TTL
Figures 1, 2
0
100
ns
100
28
ns
20
11
ns
kHz
100
ns
100
52
ns
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