4
LTC2845
sn2845 2845fs
The q denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at TA = 25°C. VCC = 5V, VIN = 3.3V, VDD = 8V, VEE = – 7V for V.28, – 5.5V for V.10, V.11
(Notes 2, 3)
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V.11 Receiver
VTH
Input Threshold Voltage
–7V
≤ VCM ≤ 7V
q
–0.2
0.2
V
VTH
Input Hysteresis
–7V
≤ VCM ≤ 7V
q
15
40
mV
IIN
Input Current (A, B)
–10V
≤ VA,B ≤ 10V
q
±0.66
mA
RIN
Input Impedance
–10V
q
15
30
k
tr, tf
Rise or Fall Time
(Figures 2, 6)
15
ns
tPLH
Input to Output
LTC2845C CL = 50pF (Figures 2, 6)
q
50
80
ns
LTC2845I CL = 50pF (Figures 2, 6)
q
50
90
ns
tPHL
Input to Output
LTC2845C CL = 50pF (Figures 2, 6)
q
50
80
ns
LTC2845I CL = 50pF (Figures 2, 6)
q
50
90
ns
t
Input to Output Difference,
tPLH – tPHL
LTC2845C CL = 50pF (Figures 2, 6)
q
04
16
ns
LTC2845I CL = 50pF (Figures 2, 6)
q
04
21
ns
V.10 Driver
VO
Output Voltage
Open Circuit, RL = 3.9k
q
±4
±6V
VT
Output Voltage
RL = 450 (Figure 3)
q
±3.6
V
RL = 450 (Figure 3)
0.9VO
ISS
Short-Circuit Current
VO = GND
±150
mA
IOZ
Output Leakage Current
–0.25V
≤ VO ≤ 0.25V, Power Off or
q
±0.1
±100
A
No-Cable Mode or Driver Disabled
tr, tf
Rise or Fall Time
RL = 450, CL = 100pF (Figures 3, 7)
2
s
tPLH
Input to Output
RL = 450, CL = 100pF (Figures 3, 7)
1
s
tPHL
Input to Output
RL = 450, CL = 100pF (Figures 3, 7)
1
s
V.10 Receiver
VTH
Receiver Input Threshold Voltage
q
–0.25
0.25
V
VTH
Receiver Input Hysteresis
q
25
50
mV
IIN
Receiver Input Current
–10V
≤ VA ≤ 10V
q
±0.66
mA
RIN
Receiver Input Impedance
–10V
≤ VA ≤ 10V
q
15
30
k
tr, tf
Rise or Fall Time
CL = 50pF (Figures 4, 8)
15
ns
tPLH
Input to Output
CL = 50pF (Figures 4, 8)
55
ns
tPHL
Input to Output
CL = 50pF (Figures 4, 8)
109
ns
t
Input to Output Difference,
tPLH – tPHL
CL = 50pF (Figures 4, 8)
60
ns
V.28 Driver
VO
Output Voltage
Open Circuit
q
±10
V
RL = 3k (Figure 3)
q
±5
±8.5
V
ISS
Short-Circuit Current
VO = GND
q
±150
mA
IOZ
Output Leakage Current
–0.25V
≤ VO ≤ 0.25V, Power Off or
q
±1
±100
A
No-Cable Mode or Driver Disabled
SR
Slew Rate
RL = 3k, CL = 2500pF (Figures 3, 7)
q
430
V/
s
tPLH
Input to Output
RL = 3k, CL = 2500pF (Figures 3, 7)
q
1.3
2.5
s
tPHL
Input to Output
RL = 3k, CL = 2500pF (Figures 3, 7)
q
1.3
2.5
s