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参数资料
型号： LTC2859CDD#TRPBF
厂商： Linear Technology
文件页数： 12/18页
文件大小： 0K
描述： IC TXRX RS485 20MBPS 10-DFN
标准包装： 2,500
类型： 收发器
驱动器/接收器数： 1/1
规程： RS485
电源电压： 4.5 V ~ 5.5 V
安装类型： 表面贴装
封装/外壳： 10-WFDFN 裸露焊盘
供应商设备封装： 10-DFN（3x3）
包装： 带卷 (TR)
LTC2859/LTC2861
3
285961fc
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VCC = 5V unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Driver
|VOD|
Differential Driver Output Voltage
R = ∞, IO = 0mA, VCC = 4.5V (Figure 1)
R = 27 (RS485), VCC = 4.5V (Figure 1)
R = 50 (RS422), VCC = 4.5V (Figure 1)
l
1.5
2.0
VCC
V
D|VOD|
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
R = 27 or R = 50 (Figure 1)
l
0.2
V
VOC
Driver Common Mode Output Voltage R = 27 or R = 50 (Figure 1)
l
3.0
V
D|VOC|
Change in Magnitude of Driver
Common Mode Output Voltage for
Complementary Output States
R = 27 or R = 50 (Figure 1)
l
0.2
V
IOZD
Driver Three-State (High Impedance)
Output Current on Y and Z
DE = OV, VO = –7V, +12V
(LTC2861 Only)
l
±10
A
IOSD
Maximum Driver Short-Circuit Current –7V ≤ (Y or Z) ≤ 12 (Figure 2)
l
±120
±250
mA
Receiver
IIN2
Receiver Input Current (A, B)
DE = TE = 0V, VCC = 0V or 5V, VA or VB = 12V,
Other at 0V
(H-Grade)
l
125
250
A
DE = TE = 0V, VCC = 0V or 5V, VA or VB = –7V,
Other at 0V
(H-Grade)
l
–100
–145
A
VTH
Receiver Differential Input Threshold
Voltage
–7V ≤ VCM ≤ 12
l
±0.2
V
DVTH
Receiver Input Hysteresis
VCM = 0V
25
mV
VOH
Receiver Output HIGH Voltage
I0 = –4mA, VID = 200mV, VCC = 4.5V
l
2.4
V
VOL
Receiver Output LOW Voltage
I0 = 4mA, VID = –200mV, VCC = 4.5V
l
0.4
V
IOZR
Receiver Three-State (High
Impedance) Output Current on RO
RE = 5V, 0V ≤ VO ≤ VCC
l
±1
A
RIN
Receiver Input Resistance
RE = 5V or 0V, DE = TE = 0V
–7V ≤ VA = VB ≤ 12V
(H-Grade)
l
96
48
125
k
RTERM
Receiver Input Terminating Resistor
TE = 5V, VAB = 2V, VB = –7, 0, 10V
(Figure 7)
l
108
120
156
Logic
VIH
Logic Input High Voltage
DE, DI, RE, TE, SLO, VCC = 4.5V
l
2
V
VIL
Logic Input Low Voltage
DE, DI, RE, TE, SLO, VCC = 4.5V
l
0.8
V
IIN1
Logic Input Current
DE, DI, RE, TE, SLO
l
0
±10
A
Supplies
ISHDN
Supply Current in Shutdown Mode
DE = 0V, RE = VCC, TE = 0V
l
0
5
A
ICCR
Supply Current in Receive Mode
No Load, DE = 0V, RE = 0V, TE = 0V
l
540
900
A
ICCT
Supply Current in Transmit Mode
No Load, DE = VCC, RE = VCC, SLO = VCC, TE = 0V
l
630
1000
A
ICCTS
Supply Current in Transmit SLO Mode No Load, DE = VCC, RE = VCC, SLO = 0V, TE = 0V
l
670
1100
A
ICCL
Supply Current in Loopback Mode
(Both Driver and Receiver Enabled)
No Load, DE = VCC, RE= 0V, SLO = VCC, TE = 0V
l
660
1100
A
ICCRT
Supply Current in Termination Mode
DE = 0V, RE = VCC, TE = VCC, SLO = VCC
l
640
1180
A
elecTrical characTerisTics
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