參數(shù)資料
型號(hào)： LTC1481I
廠商： Linear Technology Corporation
英文描述： Quad General Purpose LinCMOS(TM) Differential Comparator 14-SO
中文描述： 超低功耗485收發(fā)器，帶有關(guān)斷
文件頁(yè)數(shù)： 3/8頁(yè)
文件大?。?/td> 219K
代理商： LTC1481I
3
LTC1481
V
CC
= 5V (Notes 2, 3) unless otherwise noted.
SWITCHU
SYMBOL
t
PLH
t
PHL
t
SKEW
t
r
, t
f
t
ZH
t
ZL
t
LZ
t
HZ
t
PLH
t
PHL
t
SKD
t
ZL
t
ZH
t
LZ
t
HZ
f
MAX
t
SHDN
t
ZH(SHDN)
t
ZL(SHDN)
t
ZH(SHDN)
t
ZL(SHDN)
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
t
PLH
– t
PHL
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
Receiver Enable from Shutdown to Output Low
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 3, 5)
MIN
10
10
TYP
30
30
5
15
40
40
40
40
140
140
13
20
20
20
20
MAX
60
60
10
40
70
70
70
70
200
200
UNITS
G
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
G
G
G
3
C
L
= 100pF (Figures 4, 6), S2 Closed
C
L
= 100pF (Figures 4, 6), S1 Closed
C
L
= 15pF (Figures 4, 6), S1 Closed
C
L
= 15pF (Figures 4, 6), S2 Closed
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 3, 7)
G
G
G
G
G
30
30
G
G
C
RL
= 15pF (Figures 2, 8), S1 Closed
C
RL
= 15pF (Figures 2, 8), S2 Closed
C
RL
= 15pF (Figures 2, 8), S1 Closed
C
RL
= 15pF (Figures 2, 8), S2 Closed
G
50
50
50
50
G
G
G
G
2.5
50
Mbits/s
DE = 0, RE =
C
L
= 100pF (Figures 4, 6), S2 Closed
C
L
= 100pF (Figures 4, 6), S1 Closed
C
L
= 15pF (Figures 2, 8), S2 Closed
C
L
= 15pF (Figures 2, 8), S1 Closed
G
200
40
40
600
100
100
3500
3500
ns
ns
ns
ns
ns
G
G
G
G
The
G
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.
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
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
= 5V and T
A
= 25
°
C.
OUTPUT VOLTAGE (V)
0
70
60
50
40
30
20
10
0
3
1481 G01
1
2
4
5
O
T
A
= 25°C
Driver Differential Output Voltage
vs Output Current
TEMPERATURE (°C)
–50
D
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
0
50
75
1481 G02
–25
25
100
125
R
L
= 54
Driver Differential Output Voltage
vs Temperature
Driver Output Low Voltage
vs Output Current
OUTPUT VOLTAGE (V)
1
0
70
60
50
40
30
20
10
0
4
1481 G03
2
3
O
T
A
= 25°C
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