MAX14890E Datasheet, PDF (6/30 Pages) Maxim Integrated Products – Overvoltage and Undervoltage Fault Detection

MAX14890E
Incremental Encoder Interface for RS-422,
HTL, and TTL with Digital Inputs
Switching Characteristics (continued)
(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
CONDITIONS
MIN
TTL Receiver Channel-to-Channel |t_{CSKEW_} TTL mode, C_L = 15pF, 0V ≤ V_IN ≤ +5V,
Skew
TTL^|
Figures 1, 2
0
Digital Input (DI) Maximum
Switching Rate
SR_DZ RxZ only, DI mode, SPI = high
400
DI Propagation Delay
DI Receiver Propagation Delay
Skew |t_{DPLH_DZ} - t_{DPHL_DZ}|
t_{DPLH_DZ RxZ only, DI mode, SPI = high, CL = 15pF,}
t_{DPHL_DZ} ^{0V ≤ V}IN ^{≤ +24V, Figures 1, 2}
t_{RSKEW_DZ}
RxZ only, DI mode, SPI = high, C_L = 15pF,
0V ≤ V_IN ≤ +24V, Figures 1, 2
0
DI Maximum Glitch Duration for
Glitch Rejection
t_GL
RxZ only, DI mode, SPI = high
DI Admitted Pulse Duration
t_{PASS RxZ only, DI mode, SPI = high}
300
RECEIVER (RxY) (Note 5)
RS-422 Maximum Data Rate
DR_MAX422 RS-422 mode
35
RS-422 Receiver Propagation
Delay
t_{DPLH_422 RS-422 mode, CL = 15pF, VID = ±3V,}
t_{DPHL_422} ^{Figures 1, 2}
RS-422 Receiver Propagation Delay
t_HL-
RS-422 mode, C_L = 15pF, V_ID = ±3V,
Skew |t_{DPLH_422} - t_{DPHL_422}|
SKEW_422 ^{Figures 1, 2}
0
RS-422 Receiver Channel-to-
Channel Skew
|t_C-
RS-422 mode, C_L = 15pF, V_ID = ±3V,
SKEW_422^{| 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
Digital Input (DI) Maximum
Switching Rate
DI Propagation Delay
SR_DY DI mode
400
t_{DPLH_DY DI mode, CL = 15pF, 0V ≤ VIN ≤ +24V,}
t_{DPHL_DY} Figures 1, 2
TYP
MAX UNITS
11
ns
kHz
300
ns
300
28
ns
80
ns
ns
Mbps
25
ns
25
ns
5
ns
8
ns
kHz
100
ns
100
52
ns
kHz
300
ns
300
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