Datasheet

3
LTC1480
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
PLH
Driver Input to Output R
DIFF
= 54Ω, C
L1
= C
L2
= 100pF, ● 25 50 80 ns
(Figures 3 and 5)
t
PHL
Driver Input to Output ● 25 50 80
t
SKEW
Driver Output to Output ● 10 20
t
R
, t
F
Driver Rise or Fall Time ● 51540
t
ZH
Driver Enable to Output HIGH C
L
= 100pF (Figures 4, 6), S2 Closed ● 70 120 ns
t
ZL
Driver Enable to Output LOW C
L
= 100pF (Figures 4, 6), S1 Closed ● 70 120 ns
t
LZ
Driver Disable Time from LOW C
L
= 15pF (Figures 4, 6), S1 Closed ● 70 120 ns
t
HZ
Driver Disable Time from HIGH C
L
= 15pF (Figures 4, 6), S2 Closed ● 70 120 ns
t
PLH
Receiver Input to Output R
DIFF
= 54Ω, C
L1
= C
L2
= 100pF, ● 30 140 200 ns
(Figure 3, 7)
t
PHL
Receiver Input to Output ● 30 140 200 ns
t
SKD
t
PLH
– t
PHL
 Differential Receiver Skew 13 ns
t
ZL
Receiver Enable to Output LOW C
RL
= 15pF (Figures 2, 8), S1 Closed ● 50 80 ns
t
ZH
Receiver Enable to Output HIGH C
RL
= 15pF (Figures 2, 8), S2 Closed ● 50 80 ns
t
LZ
Receiver Disable from LOW C
RL
= 15pF (Figures 2, 8), S1 Closed ● 50 80 ns
t
HZ
Receiver Disable from HIGH C
RL
= 15pF (Figures 2, 8), S2 Closed ● 50 80 ns
f
MAX
Maximum Data Rate ● 2.5 Mbits/s
t
SHDN
Time to Shutdown DE = 0, RE = ● 50 200 600 ns
t
ZH(SHDN)
Driver Enable from Shutdown to Output HIGH C
L
= 100pF (Figures 4, 6), S2 Closed ● 70 120 ns
t
ZL(SHDN)
Driver Enable from Shutdown to Output LOW C
L
= 100pF (Figures 4, 6), S1 Closed ● 70 120 ns
t
ZH(SHDN)
Receiver Enable from Shutdown to Output HIGH C
L
= 15pF (Figures 2, 8), S2 Closed ● 4500 ns
t
ZL(SHDN)
Receiver Enable from Shutdown to Output LOW C
L
= 15pF (Figures 2, 8), S1 Closed ● 4500 ns
SWITCHI G CHARACTERISTICS
U
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute maximum ratings are those beyond which the safety of
the device cannot be guaranteed.
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
CC
= 3.3V and T
A
= 25°C.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
V
CC
= 3.3V (Notes 2, 3)
OUTPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
50
100
150
1.5 2.5
LT1480 • TPC02
0
–50
0.5 1.0
2.0 3.0 3.5
–100
–150
V
CC
= 3.3V
T
A
= 25°C
Driver Output Low/High Voltage
vs Output Current
Supply Current vs Temperature
TEMPERATURE (°C)
–25
200
SUPPLY CURRENT (µA)
225
275
300
325
75
425
LT1480 • TPC01
250
25 175125
–50
50
0 150100
350
375
400
DRIVER DISABLED
THERMAL SHUTDOWN
WITH DRIVER ENABLED
V
CC
= 3.3V
Driver Differential Output Voltage
vs Temperature
TEMPERATURE (°C)
–40

1.9
2.0
2.2
20 60
LTC1480 • TPC03
1.8
1.7
–20 0
40 80 100
1.6
1.5
2.1
DIFFERENTIAL VOLTAGE (V)
R
L
= 100Ω
R
L
= 54Ω
V
CC
= 3.3V