LTC485CJ8 Ver la hoja de datos (PDF) - Linear Technology
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LTC485CJ8 Datasheet PDF : 12 Pages
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LTC485
U
SWITCHI G CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.VCC = 5V ±5%, unless otherwise noted. (Notes 2 and 3)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
ICC
Supply Current
No Load, Pins 2, Outputs Enabled
●
3, 4 = 0V or 5V Outputs Disabled
●
500
900
µA
300
500
µA
IOSD1
Driver Short-Circuit Current, VOUT = HIGH
VO = – 7V
● 35
100
250
mA
IOSD2
Driver Short-Circuit Current, VOUT = LOW
VO = 10V
● 35
100
250
mA
IOSR
Receiver Short-Circuit Current
0V ≤ VO ≤ VCC
●7
85
mA
tPLH
Driver Input to Output
tPHL
Driver Input to Output
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3 and 5)
● 10
30
50
ns
● 10
30
50
ns
tSKEW
Driver Output to Output
●
5
10
ns
tr, tf
Driver Rise or Fall Time
●3
15
25
ns
tZH
Driver Enable to Output High
CL = 100pF (Figures 4 and 6) S2 Closed ●
40
70
ns
tZL
Driver Enable to Output Low
CL = 100pF (Figures 4 and 6) S1 Closed ●
40
70
ns
tLZ
Driver Disable Time from Low
CL = 15pF (Figures 4 and 6) S1 Closed ●
40
70
ns
tHZ
Driver Disable Time from High
CL = 15pF (Figures 4 and 6) S2 Closed ●
40
70
ns
tPLH
Receiver Input to Output
tPHL
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3 and 7)
● 30
90
200
ns
● 30
90
200
ns
tSKD
⏐tPLH – tPHL⏐ Differential Receiver Skew
●
13
ns
tZL
Receiver Enable to Output Low
CRL = 15pF (Figures 2 and 8) S1 Closed ●
20
50
ns
tZH
Receiver Enable to Output High
CRL = 15pF (Figures 2 and 8) S2 Closed ●
20
50
ns
tLZ
Receiver Disable from Low
CRL = 15pF (Figures 2 and 8) S1 Closed ●
20
50
ns
tHZ
Receiver Disable from High
CRL = 15pF (Figures 2 and 8) S2 Closed ●
20
50
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 = 5V and TA = 25°C.
Note 4: The LTC485 is guaranteed by design to be functional over a supply
voltage range of 5V ±10%. Data sheet parameters are guaranteed over the
tested supply voltage range of 5V ±5%.
TYPICAL PERFOR A CE CHARACTERISTICS
Receiver Output Low Voltage
vs Output Current
36
TA = 25°C
32
28
24
20
16
12
8
4
0
0
0.5
1.0
1.5
2.0
OUTPUT VOLTAGE (V)
LTC485 • TPC01
Receiver Output High Voltage
vs Output Current
–18
TA = 25°C
–16
–14
–12
–10
–8
–6
–4
–2
0
5
4
3
2
OUTPUT VOLTAGE (V)
LTC485 • TPC02
Receiver Output High Voltage
vs Temperature
4.8
I = 8mA
4.6
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC485 • TPC03
sn 485LTC485ffs
3
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