MAX1481(1997) Просмотр технического описания (PDF) - Maxim Integrated
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MAX1481
(Rev.:1997)
(Rev.:1997)
Maxim Integrated
MAX1481 Datasheet PDF : 16 Pages
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Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25ºC.) (Note 1)
PARAMETER
RECEIVER
SYMBOL
CONDITIONS
MIN TYP MAX
Receiver Differential Threshold
Voltage
VTH -7V ≤ VCM ≤ 12V
-200
200
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
∆VTH
VOH
VOL
IO = -4mA, VID = 200mV
IO = 4mA, VID = -200mV
70
3.5
0.4
Three-State Output Current at
Receiver
IOZR 0.4V ≤ VO ≤ 2.4V
±1
Receiver Input Resistance
RIN
-7V ≤ VCM ≤ 12V
96
Receiver Output Short-Circuit
Current
IOSR 0V ≤ VRO ≤ VCC
±95
SUPPLY CURRENT
No-Load Supply Current
ICC
RE = GND, DE = VCC
300
600
Supply Current in Shutdown
Mode (MAX1481 Only)
ISHDN DE = GND, RE = VCC
0.1
10
UNITS
mV
mV
V
V
µA
kΩ
mA
µA
µA
SWITCHING CHARACTERISTICS (MAX1484/MAX1486)
(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETER
Driver Input to Output
Driver Input to Output
Driver Output Skew
| tDPLH - tDPHL |
SYMBOL
tDPLH
tDPHL
tDSKEW
CONDITIONS
RDIFF = 54Ω, CL1 = CL2 = 100pF,
Figures 7 and 9
RDIFF = 54Ω, CL1 = CL2 = 100pF,
Figures 7 and 9
MIN TYP
30
30
5
Driver Rise or Fall Time
tDR, tDF
RDIFF = 54Ω, CL1 = CL2 = 100pF,
Figures 7 and 9
5
15
Maximum Data Rate
Driver Enable to Output Low
Driver Enable to Output High
Driver Disable Time from Low
Driver Disable Time from High
fMAX
tDZL
tDZH
tDLZ
tDHZ
CL = 100pF, S1 closed, Figures 8 and 10
CL = 100pF, S2 closed, Figures 8 and 10
CL = 15pF, S1 closed, Figures 8 and 10
CL = 15pF, S2 closed, Figures 8 and 10
12
40
40
40
40
Receiver Input to Output
tRPLH,
tRPHL
Figures 11 and 13
90
| tRPLH - tRPHL | Differential
Receiver Skew
tRSKD Figures 11 and 13
5
Receiver Enable to Output Low
tRZL CL = 100pF, S1 closed, Figures 6 and 12
20
Receiver Enable to Output High tRZH CL = 100pF, S2 closed, Figures 6 and 12
20
Receiver Disable Time from Low tRLZ CL = 100pF, S1 closed, Figures 6 and 12
20
Receiver Disable Time from High tRHZ CL = 100pF, S2 closed, Figures 6 and 12
20
MAX
60
60
UNITS
ns
10
ns
35
ns
Mbps
70
ns
70
ns
70
ns
70
ns
150
ns
ns
50
ns
50
ns
50
ns
50
ns
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