LTC485 データシートの表示（PDF） - Linear Technology
部品番号
コンポーネント説明
メーカー
LTC485 Datasheet PDF : 14 Pages
| |||
LTC485
Electrical Characteristics The l 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
VIH
Input High Voltage
DE, DI, RE
VIL
Input Low Voltage
DE, DI, RE
IIN1
Input Current
DE, DI, RE
IIN2
Input Current (A, B)
DE = 0, VCC = 0V or 5.25V
VIN = 12V
VIN = –7V
VTH
Differential Input Threshold Voltage for Receiver –7V ≤ VCM ≤ 12V
ΔVTH
Receiver Input Hysteresis
VCM = 0V
VOH
Receiver Output High Voltage
IO = –4mA, VID = 200mV
VOL
Receiver Output Low Voltage
IO = 4mA, VID = –200mV
IOZR
Three-State (High Impedance) Output Current VCC = Max, 0.4V ≤ VO ≤ 2.4V
at Receiver
l2
l
0.8
l
±2
l
±1
l
–0.8
l –0.2
0.2
l
70
l 3.5
l
0.4
l
±1
RIN
Receiver Input Resistance
–7V ≤ VCM ≤ 12V
l 12
UNITS
V
V
μA
mA
mA
V
mV
V
V
μA
kΩ
Switching Characteristics The l 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
ICC
Supply Current
No Load, Pins 2, 3, 4 = 0V or 5V Outputs Enabled l
Outputs Disabled l
500 900
300 500
IOSD1
IOSD2
IOSR
tPLH
tPHL
tSKEW
tr, tf
tZH
tZL
tLZ
tHZ
tPLH
tPHL
tSKD
tZL
tZH
tLZ
tHZ
Driver Short-Circuit Current, VOUT = HIGH
Driver Short-Circuit Current, VOUT = LOW
Receiver Short-Circuit Current
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
VO = – 7V
VO = 10V
0V ≤ VO ≤ VCC
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3 and 5)
CL = 100pF (Figures 4 and 6) S2 Closed
CL = 100pF (Figures 4 and 6) S1 Closed
CL = 15pF (Figures 4 and 6) S1 Closed
CL = 15pF (Figures 4 and 6) S2 Closed
RDIFF = 54Ω, CL1 = CL2 = 100pF,
(Figures 3 and 7)
|tPLH – tPHL| Differential Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
CRL = 15pF (Figures 2 and 8) S1 Closed
CRL = 15pF (Figures 2 and 8) S2 Closed
CRL = 15pF (Figures 2 and 8) S1 Closed
CRL = 15pF (Figures 2 and 8) S2 Closed
l 35 100 250
l 35 100 250
l7
85
l 10
30
50
l 10
30
50
l
5
10
l3
15
25
l
40
70
l
40
70
l
40
70
l
40
70
l 30 90 200
l 30 90 200
l
13
l
20
50
l
20
50
l
20
50
l
20
50
UNITS
μA
μA
mA
mA
mA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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%.
485fi
3
Share Link: 