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参数资料
| 型号： | LTC2850IMS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 8MSOP |
| 标准包装： | 50 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 1354 (CN2011-ZH PDF) |
LTC2850/LTC2851/LTC2852
285012fd
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Driver
|VOD|
Differential Driver Output Voltage
R = ∞, VCC = 3V (Figure 1)
R = 27
Ω, VCC = 3V (Figure 1)
R = 50
Ω, VCC = 3.13V (Figure 1)
l
1.5
2
VCC
V
Δ|VOD|
Difference in Magnitude of Driver Differential
Output Voltage for Complementary Output
States
R = 27
Ω or 50Ω (Figure 1)
l
0.2
V
VOC
Driver Common Mode Output Voltage
R = 27
Ω or 50Ω (Figure 1)
l
3
V
Δ|VOC|
Difference in Magnitude of Driver Common
Mode Output Voltage for Complementary
Output States
R = 27
Ω or 50Ω (Figure 1)
l
0.2
V
IOZD
Driver Three-State (High Impedance) Output
Current on Y and Z
DE = 0V, (Y or Z) = –7V, 12V (LTC2852)
l
±10
A
IOSD
Maximum Driver Short-Circuit Current
–7V ≤ (Y or Z) ≤ 12V (Figure 2)
l
–250
±180
±250
300
mA
Receiver
IIN
Receiver Input Current (A, B)
DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V
(Figure 3) (C, I-Grade)
DE = TE = 0V, VCC = 0V or 3.3V, VIN = –7V,
(Figure 3) (C, I-Grade)
l
–100
125
A
DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V
(Figure 3) (H-Grade)
DE = TE = 0V, VCC = 0V or 3.3V, VIN = –7V,
(Figure 3) (H-Grade)
l
–145
250
A
RIN
Receiver Input Resistance
RE = VCC or 0V, DE = TE = 0V,
VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)
(C, I-Grade)
l
96
125
k
Ω
RE = VCC or 0V, DE = TE = 0V,
VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)
(H-Grade)
l
48
125
k
Ω
VTH
Receiver Differential Input Threshold Voltage –7V ≤ B ≤ 12V
l
±0.2
V
ΔVTH
Receiver Input Hysteresis
B = 0V
25
mV
VOH
Receiver Output High Voltage
I(RO) = –4mA, A-B = 200mV, VCC = 3V
l
2.4
V
VOL
Receiver Output Low Voltage
I(RO) = 4mA, A-B = –200mV, VCC = 3V
l
0.4
V
IOZR
Receiver Three-State (High Impedance)
Output Current on RO
RE = VCC, 0V ≤ RO ≤ VCC (LTC2850, LTC2852)
l
±1
A
IOSR
Receiver Short-Circuit Current
0V ≤ RO ≤ VCC
l
±85
mA
Logic
VIH
Logic Input High Voltage
VCC = 3.6V
l
2
V
VIL
Logic Input Low Voltage
VCC = 3V
l
0.8
V
IINL
Logic Input Current
l
0
±10
A
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