VTH Receiver Input Hysteresis " />
參數(shù)資料
型號： LTC1484IS8#PBF
廠商： Linear Technology
文件頁數(shù)： 10/16頁
文件大?。?/td> 0K
描述： IC TXRX RS485 LOWPWR 8-SOIC
標(biāo)準(zhǔn)包裝： 100
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： RS422，RS485
電源電壓： 4.75 V ~ 5.25 V
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 管件
產(chǎn)品目錄頁面： 1354 (CN2011-ZH PDF)
3
LTC1484
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VTH
Receiver Input Hysteresis
VCM = 0V, DE = 0
q
±30
mV
VOH
Receiver Output High Voltage
IOUT = – 4mA, (VA – VB) = 200mV
q
3.5
V
VOL
Receiver Output Low Voltage
IOUT = 4mA, (VA – VB) = – 200mV
q
0.4
V
IOZR
Three-State (High Impedance) Output Current
VCC = Max, 0.4V ≤ VOUT ≤ 2.4V,
q
±1
A
at Receiver
DE = 0
RIN
Receiver Input Resistance
–7V
≤ VCM ≤ 12V
q
12
22
k
ICC
Supply Current
No Load, Output Enabled (DE = VCC)
q
600
900
A
No Load, Output Disabled (DE = 0)
q
400
700
A
ISHDN
Supply Current in Shutdown Mode
DE = 0, RE = VCC, DI = 0
q
120
A
IOSD1
Driver Short-Circuit Current, VOUT = High (Note 4)
– 7V
≤ VOUT ≤ 10V
35
250
mA
IOSD2
Driver Short-Circuit Current, VOUT = Low (Note 4)
– 7V
≤ VOUT ≤ 10V
35
250
mA
IOSR
Receiver Short-Circuit Current
0V
≤ VOUT ≤ VCC
q
785
mA
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V ±5% (Notes 2 and 3) unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SWITCHING CHARACTERISTICS
U
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPLH
Driver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
10
28.5
60
ns
(Figures 4, 6)
tPHL
Driver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
10
31
60
ns
(Figures 4, 6)
tSKEW
Driver Output to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
2.5
10
ns
(Figures 4, 6)
tr, tf
Driver Rise or Fall Time
RDIFF = 54, CL1 = CL2 = 100pF
q
315
40
ns
(Figures 4, 6)
tZH
Driver Enable to Output High
CL = 100pF (Figures 5, 7) S2 Closed
q
40
70
ns
tZL
Driver Enable to Output Low
CL = 100pF (Figures 5, 7) S1 Closed
q
40
100
ns
tLZ
Driver Disable Time from Low
CL = 15pF (Figures 5, 7) S1 Closed
q
40
70
ns
tHZ
Driver Disable Time from High
CL = 15pF (Figures 5, 7) S2 Closed
q
40
70
ns
tPLH
Receiver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF,
q
30
160
200
ns
(Figures 4, 8)
tPHL
Receiver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF,
q
30
140
200
ns
(Figures 4, 8)
tSKD
|tPLH – tPHL| Differential Receiver Skew
RDIFF = 54, CL1 = CL2 = 100pF,
20
ns
(Figures 4, 8)
tZL
Receiver Enable to Output Low
CRL = 15pF (Figures 3, 9) S1 Closed
q
20
50
ns
tZH
Receiver Enable to Output High
CRL = 15pF (Figures 3, 9) S2 Closed
q
20
50
ns
tLZ
Receiver Disable from Low
CRL = 15pF (Figures 3, 9) S1 Closed
q
20
50
ns
tHZ
Receiver Disable from High
CRL = 15pF (Figures 3, 9) S2 Closed
q
20
50
ns
tDZR
Driver Enable to Receiver Valid
RDIFF = 54, CL1 = CL2 = 100pF
q
1600
3000
ns
(Figures 4, 10)
fMAX
Maximum Data Rate (Note 5)
q
4
5
Mbps
tSHDN
Time to Shutdown (Note 6)
DE = 0, RE
↑
q
50
300
600
ns
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
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