LTC1481 Linear Technology, LTC1481 Datasheet - Page 3

• Manufacturer Part Number: LTC1481
• Description: Ultra-Low Power RS485 Transceiver with Shutdown
• Manufacturer: Linear Technology

SWITCHI G CHARACTERISTICS
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
f
t
t
t
t
t
The
temperature range.
Note 1: Absolute maximum ratings are those beyond which the safety of
the device cannot be guaranteed.
TYPICAL PERFORMANCE CHARACTERISTICS
PLH
PHL
SKEW
r
ZH
ZL
LZ
HZ
PLH
PHL
SKD
ZL
ZH
LZ
HZ
MAX
SHDN
ZH(SHDN)
ZL(SHDN)
ZH(SHDN)
ZL(SHDN)
, t
f
70
60
50
40
30
20
10
0
denotes specifications which apply over the full operating
0
Driver Differential Output Voltage
vs Output Current
PARAMETER
Driver Input to Output
Driver Input to Output
Driver Output to Output
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
Receiver Input to Output
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
Maximum Data Rate
Time to Shutdown
Driver Enable from Shutdown to Output High
Driver Enable from Shutdown to Output Low
Receiver Enable from Shutdown to Output High
Receiver Enable from Shutdown to Output Low
t
PLH
1
OUTPUT VOLTAGE (V)
U
– t
PHL
2
Differential Receiver Skew
3
T
W
A
= 25°C
4
1481 G01
U
5
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
–50
Driver Differential Output Voltage
vs Temperature
CONDITIONS
R
(Figures 3, 5)
C
C
C
C
R
(Figures 3, 7)
C
C
C
C
DE = 0, RE =
C
C
C
C
L
L
L
L
RL
RL
RL
RL
L
L
L
L
–25
DIFF
DIFF
= 100pF (Figures 4, 6), S2 Closed
= 100pF (Figures 4, 6), S1 Closed
= 15pF (Figures 4, 6), S1 Closed
= 15pF (Figures 4, 6), S2 Closed
= 100pF (Figures 4, 6), S2 Closed
= 100pF (Figures 4, 6), S1 Closed
= 15pF (Figures 2, 8), S2 Closed
= 15pF (Figures 2, 8), S1 Closed
= 15pF (Figures 2, 8), S1 Closed
= 15pF (Figures 2, 8), S2 Closed
= 15pF (Figures 2, 8), S1 Closed
= 15pF (Figures 2, 8), S2 Closed
= 54 , C
= 54 , C
V
CC
0
TEMPERATURE (°C)
= 5V (Notes 2, 3) unless otherwise noted.
25
L1
L1
Note 2: All currents into device pins are positive; all currents out ot device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 3: All typicals are given for V
= C
= C
50
L2
L2
= 100pF,
= 100pF,
75
R
L
= 54
100
1481 G02
125
70
60
50
40
30
20
10
0
MIN
2.5
CC
10
10
30
30
50
0
3
Driver Output Low Voltage
vs Output Current
= 5V and T
T
A
= 25°C
1
OUTPUT VOLTAGE (V)
TYP
140
140
200
30
30
15
40
40
40
40
13
20
20
20
20
40
40
5
A
= 25 C.
2
LTC1481
3500
3500
MAX
200
200
600
100
100
60
60
10
40
70
70
70
70
50
50
50
50
3
Mbits/s
UNITS
1481 G03
3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4