LTC1480 Linear Technology, LTC1480 Datasheet - Page 3

• Manufacturer Part Number: LTC1480
• Description: 3.3V Ultra-Low Power RS485 Transceiver
• 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
425
400
375
350
325
300
275
250
225
200
F
–50
denotes specifications which apply over the full operating
Supply Current vs Temperature
V
–25
CC
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
= 3.3V
PLH
0
U
– t
DRIVER DISABLED
TEMPERATURE ( C)
WITH DRIVER ENABLED
25
THERMAL SHUTDOWN
PHL
50
Differential Receiver Skew
75
100
W
125
LT1480 • TPC01
150
U
175
–150
–100
– 50
150
100
50
0
0
Driver Output Low/High Voltage
vs Output Current
CONDITIONS
R
(Figures 3 and 5)
C
C
C
C
R
(Figure 3, 7)
C
C
C
C
DE = 0, RE =
C
C
C
C
V
T
L
L
L
L
RL
RL
RL
RL
L
L
L
L
A
DIFF
DIFF
CC
0.5
= 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
= 25 C
= 3.3V
= 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
1.0
OUTPUT VOLTAGE (V)
= 3.3V (Notes 2, 3)
1.5
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
2.0
L2
L2
= 100pF,
= 100pF,
2.5
LT1480 • TPC02
3.0
3.5
2.2
2.1
2.0
1.9
1.8
1.7
1.5
1.6
MIN
–40
2.5
25
25
30
30
50
CC
5
Driver Differential Output Voltage
vs Temperature
= 3.3V and T
V
CC
–20
= 3.3V
0
TYP
140
140
200
TEMPERATURE ( C)
50
50
15
70
70
70
70
13
50
50
50
50
70
70
10
R
R
A
L
L
20
= 25 C.
= 100
= 54
40
LTC1480
4500
4500
MAX
120
120
120
120
200
200
600
120
120
80
80
20
40
80
80
80
80
60
LTC1480 • TPC03
80
Mbits/s
UNITS
3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
100