LTC1480 Ver la hoja de datos (PDF) - Linear Technology
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LTC1480 Datasheet PDF : 8 Pages
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LTC1480
U
SWITCHI G CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range. VCC = 3.3V (Notes 2, 3).
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
IOSD1
IOSD2
IOSR
tPLH
Driver Short-Circuit Current, VOUT = HIGH
Driver Short-Circuit Current, VOUT = LOW
Receiver Short-Circuit Current
Driver Input to Output
– 7V ≤ VO ≤ 12V
– 7V ≤ VO ≤ 12V
0V ≤ VO ≤ VCC
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3, 5)
● 35
● 35
●7
● 25
250
mA
250
mA
85
mA
50
80
ns
tPHL
tSKEW
tR, tF
tZH
tZL
tLZ
tHZ
tPLH
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
● 25
50
80
ns
●
10
20
ns
●5
15
40
ns
CL = 100pF (Figures 4, 6), S2 Closed
●
70
120
ns
CL = 100pF (Figures 4, 6), S1 Closed
●
70
120
ns
CL = 15pF (Figures 4, 6), S1 Closed
●
70
120
ns
CL = 15pF (Figures 4, 6), S2 Closed
●
70
120
ns
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3, 7)
● 30
140
200
ns
tPHL
tSKD
tZL
tZH
tLZ
tHZ
fMAX
tSHDN
tZH(SHDN)
tZL(SHDN)
tZH(SHDN)
Receiver Input to Output
⏐tPLH – tPHL⏐ Differential Receiver Skew
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
CRL = 15pF (Figures 2, 8), S1 Closed
CRL = 15pF (Figures 2, 8), S2 Closed
CRL = 15pF (Figures 2, 8), S1 Closed
CRL = 15pF (Figures 2, 8), S2 Closed
DE = 0, RE =
CL = 100pF (Figures 4, 6), S2 Closed
CL = 100pF (Figures 4, 6), S1 Closed
CL = 15pF (Figures 2, 8), S2 Closed
● 30
●
●
●
●
● 2.5
● 50
●
●
●
140
200
ns
13
ns
50
80
ns
50
80
ns
50
80
ns
50
80
ns
Mbits/s
200
600
ns
70
120
ns
70
120
ns
4500
ns
tZL(SHDN) Receiver Enable from Shutdown to Output LOW CL = 15pF (Figures 2, 8), S1 Closed
●
4500
ns
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 VCC = 3.3V and TA = 25°C.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Temperature
425
400
THERMAL SHUTDOWN
375
WITH DRIVER ENABLED
350
Driver Output Low/High Voltage
vs Output Current
150
VCC = 3.3V
TA = 25°C
100
50
325
300
275
DRIVER DISABLED
250
225 VCC = 3.3V
200
–50 –25
0 25 50 75 100 125 150 175
TEMPERATURE (°C)
1480 G01
0
– 50
–100
–150
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
OUTPUT VOLTAGE (V)
1480 G02
Driver Differential Output Voltage
vs Temperature
2.2
2.1
RL = 100Ω
2.0
1.9
RL = 54Ω
1.8
1.7
1.6
VCC = 3.3V
1.5
–40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1480 G03
1480fa
3
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