9
FN6201.3
November 21, 2007
Driver Output Transition Time
tr, tf
RL =3kΩ, CL = 2500pF, 10% to 90%
Full
0.22
1.2
3.1
s
Driver Propagation Delay
tDPHL
RL =3kΩ, CL = 1000pF (Figure 6) Full
-
1
2
s
tDPLH
Full
-
1.2
2
s
Driver Propagation Delay Skew
tDSKEW
Full
-
240
400
ns
Driver Enable Time
tDEN
25
-
800
-
ns
Driver Disable Time
tDDIS
RL =5kΩ, Measured at VOUT = ±3V
25
-
500
-
ns
Driver Enable Time from Shutdown
tDENSD
25
-
20
-
s
Driver Maximum Data Rate
DRD
RL =3kΩ, CL = 1000pF, One Transmitter
Switching
Full
460
650
-
kbps
Receiver Propagation Delay
tRPHL
Full
-
50
120
ns
tRPLH
Full
-
40
120
ns
Receiver Propagation Delay Skew
tRSKEW
Full
-
10
40
ns
Receiver Maximum Data Rate
DRR
CL = 15pF
Full
0.46
2
-
Mbps
RS-485 DRIVER SWITCHING CHARACTERISTICS (FAST DATA RATE (20Mbps), 485/232 = VCC, SLEW = VCC, ALL VERSIONS)
Driver Differential Input to Output
Delay
tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 2) Full
15
30
50
ns
Driver Output Skew
tSKEW
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
-
0.5
10
ns
Driver Differential Rise or Fall Time
tR, tF
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
3
11
20
ns
Driver Enable to Output Low
tZL
CL = 100pF, SW = VCC (Figure 3) Full
-
27
60
ns
Driver Enable to Output High
tZH
CL = 100pF, SW = GND (Figure 3) Full
-
24
60
ns
Driver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 3) Full
-
31
60
ns
Driver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 3) Full
-
24
60
ns
Driver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 3) Full
-
65
250
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 3) Full
-
152
250
ns
Driver Maximum Data Rate
fMAX
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
-
30
-
Mbps
RS-485 DRIVER SWITCHING CHARACTERISTICS (MEDIUM DATA RATE (460kbps), 485/232 = VCC, SLEW = 0V, SPB = VCC (QFN Only), ALL
VERSIONS)
Driver Differential Input to Output
Delay
tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 2) Full
200
490
1000
ns
Driver Output Skew
tSKEW
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
-
110
400
ns
Driver Differential Rise or Fall Time
tR, tF
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
300
600
1100
ns
Driver Enable to Output Low
tZL
CL = 100pF, SW = VCC (Figure 3) Full
-
30
300
ns
Driver Enable to Output High
tZH
CL = 100pF, SW = GND (Figure 3) Full
-
128
300
ns
Driver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 3) Full
-
31
60
ns
Driver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 3) Full
-
24
60
ns
Driver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC (Figure 3) Full
-
65
500
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND (Figure 3) Full
-
255
500
ns
Driver Maximum Data Rate
fMAX
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
-
2000
-
kbps
Electrical Specifications
Test Conditions: VCC = 4.5V to 5.5V, C1 - C4 = 0.1μF, VL = VCC (for QFN only), Unless Otherwise Specified.
Typicals are at VCC = 5V, TA = +25°C (Note 8). (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 15)
TYP
MAX
(Note 15) UNITS
ISL81387, ISL41387