elecTrical characTerisTics The l denotes the specifications which app" />
參數(shù)資料
型號: LTC2851HDD#TRPBF
廠商: Linear Technology
文件頁數(shù): 13/18頁
文件大?。?/td> 0K
描述: IC TXRX RS485 20MBPS 8-DFN
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 8-WFDFN 裸露焊盤
供應商設備封裝: 8-DFN-EP(3x3)
包裝: 帶卷 (TR)
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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