參數(shù)資料
型號(hào)： LTC1484C
廠商： Linear Technology Corporation
英文描述： Low-Power LinCMOS(TM) Quad Comparator 20-LCCC -55 to 125
中文描述： 485低功耗收發(fā)器與接收器故障保險(xiǎn)
文件頁(yè)數(shù)： 3/16頁(yè)
文件大小： 274K
代理商： LTC1484C
3
LTC1484
SYMBOL
V
TH
V
OH
V
OL
I
OZR
PARAMETER
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (High Impedance) Output Current
at Receiver
Receiver Input Resistance
Supply Current
CONDITIONS
V
CM
= 0V, DE = 0
I
OUT
= –4mA, (V
A
– V
B
) = 200mV
I
OUT
= 4mA, (V
A
– V
B
) = –200mV
V
CC
= Max, 0.4V
≤
V
OUT
≤
2.4V,
DE = 0
–7V
≤
V
CM
≤
12V
No Load, Output Enabled (DE = V
CC
)
No Load, Output Disabled (DE = 0)
DE = 0, RE = V
CC
, DI = 0
–7V
≤
V
OUT
≤
10V
–7V
≤
V
OUT
≤
10V
0V
≤
V
OUT
≤
V
CC
MIN
TYP
±
30
MAX
UNITS
mV
G
G
3.5
V
V
G
0.4
±
1
G
μ
A
R
IN
I
CC
G
12
22
600
400
1
k
μ
A
μ
A
μ
A
mA
mA
mA
G
G
900
700
20
250
250
85
I
SHDN
I
OSD1
I
OSD2
I
OSR
Supply Current in Shutdown Mode
Driver Short-Circuit Current, V
OUT
= High (Note 4)
Driver Short-Circuit Current, V
OUT
= Low (Note 4)
Receiver Short-Circuit Current
G
35
35
7
G
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 5V
±
5% (Notes 2 and 3) unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SWITCHI
G CHARACTERISTICS
U
temperature range, otherwise specifications are at T
A
= 25
°
C.
SYMBOL
t
PLH
PARAMETER
Driver Input to Output
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 4, 6)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 4, 6)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 4, 6)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 4, 6)
C
L
= 100pF (Figures 5, 7) S2 Closed
C
L
= 100pF (Figures 5, 7) S1 Closed
C
L
= 15pF (Figures 5, 7) S1 Closed
C
L
= 15pF (Figures 5, 7) S2 Closed
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 4, 8)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 4, 8)
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 4, 8)
C
RL
= 15pF (Figures 3, 9) S1 Closed
C
RL
= 15pF (Figures 3, 9) S2 Closed
C
RL
= 15pF (Figures 3, 9) S1 Closed
C
RL
= 15pF (Figures 3, 9) S2 Closed
R
DIFF
= 54
, C
L1
= C
L2
= 100pF
(Figures 4, 10)
MIN
10
TYP
28.5
MAX
60
UNITS
G
ns
t
PHL
Driver Input to Output
G
10
31
60
ns
t
SKEW
Driver Output to Output
G
2.5
10
ns
t
r
, t
f
Driver Rise or Fall Time
G
3
15
40
ns
t
ZH
t
ZL
t
LZ
t
HZ
t
PLH
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
G
40
40
40
40
160
70
100
70
70
200
ns
ns
ns
ns
ns
G
G
G
G
30
t
PHL
Receiver Input to Output
G
30
140
200
ns
t
SKD
|t
PLH
– t
PHL
| Differential Receiver Skew
20
ns
t
ZL
t
ZH
t
LZ
t
HZ
t
DZR
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
Driver Enable to Receiver Valid
G
20
20
20
20
1600
50
50
50
50
3000
ns
ns
ns
ns
ns
G
G
G
G
f
MAX
t
SHDN
Maximum Data Rate (Note 5)
Time to Shutdown (Note 6)
G
4
5
Mbps
DE = 0, RE
↑
G
50
300
600
ns
The
G
denotes the specifications which apply over the full operating
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