3
LTC1685
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPLH, tPHL
Driver Input-to-Output
RDIFF = 54, CL1 = CL2 = 100pF, Figures 3, 5,
Propagation Delay
LTC1685C
q
15
18.5
22
ns
LTC1685I
q
13
18.5
25
ns
tSKEW
Driver Output A-to-Output
RDIFF = 54, CL1 = CL2 = 100pF,
500
ps
B Skew
Figures 3, 5
tr, tf
Driver Rise/Fall Time
RDIFF = 54, CL1 = CL2 = 100pF,
3.5
ns
Figures 3, 5
tZH
Driver Enable to Output High
CL = 100pF, S2 Closed, Figures 4, 6
q
25
50
ns
tZL
Driver Enable to Output Low
CL = 100pF, S1 Closed, Figures 4, 6
q
25
50
ns
tLZ
Driver Disable from Low
CL = 15pF, S1 Closed, Figures 4, 6
q
25
50
ns
tHZ
Driver Disable from High
CL = 15pF, S2 Closed, Figures 4, 6
q
25
50
ns
tPLH, tPHL
Receiver Input-to-Output
CL = 15pF, Figures 3, 7
Propagation Delay
LTC1685C
q
15
18.5
22
ns
LTC1685I
q
13
18.5
25
ns
tSQD
Receiver Skew
tPLH – tPHL
CL = 15pF, Figures 3, 7
500
ps
tZL
Receiver Enable to Output Low
CL = 15pF, S1 Closed, Figures 2, 8
q
25
50
ns
tZH
Receiver Enable to Output High
CL = 15pF, S2 Closed, Figures 2, 8
q
25
50
ns
tLZ
Receiver Disable from Low
CL = 15pF, S1 Closed, Figures 2, 8
q
25
50
ns
tHZ
Receiver Disable from High
CL = 15pF, S2 Closed, Figures 2, 8
q
25
50
ns
Maximum Receiver Input
(Note 4)
q
2000
ns
Rise/Fall Times
tPKG-PKG
Package-to-Package Skew
Same Temperature (Note 4)
1.5
ns
Minimum Input Pulse Width
VDD = 5V ± 5% (Note 4)
LTC1685C
q
17
19.2
ns
LTC1685I
q
20
25
ns
Maximum Data Rate
VDD = 5V ± 5% (Note 4)
LTC1685C
q
52
60
Mbps
LTC1685I
q
40
50
Mbps
Maximum Input Frequency
VDD = 5V ± 5% (Note 4)
LTC1685C
q
26
30
MHz
LTC1685I
q
20
25
MHz
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IOSD2
Driver Short-Circuit Current, VOUT = LOW
VOUT = – 7V or 10V (Note 5)
q
20
mA
IOSR
Receiver Short-Circuit Current
VOUT = 0V or VDD (Note 5)
q
20
mA
RIN
Input Resistance
– 7V
≤ VCM ≤ 12V
q
22
k
CIN
Input Capacitance
A, B Inputs, D, DE, RE
3
pF
Open-Circuit Input Voltage, Figure 5
VDD = 5V (Note 4)
q
3.2
3.3
3.4
V
Fail-Safe Time Time to Detect Fail-Safe Condition
2
s
CMRR
Receiver Input Common Mode Rejection Ratio
VCM = 2.6V, f = 26MHz
45
dB
CLOAD
Receiver and Driver Output Load Capacitance
(Note 4)
q
500
pF
DC ELECTRICAL CHARACTERISTICS
SWITCHING CHARACTERISTICS
U
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 5V ±5%, unless otherwise noted. (Notes 2, 3)
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 5V, unless otherwise noted. (Notes 2, 3)