The ● denotes the specications which apply over the full ope" />
參數(shù)資料
型號： LTC2855IGN#TRPBF
廠商： Linear Technology
文件頁數(shù)： 10/16頁
文件大?。?/td> 0K
描述： IC TXRX RS485/RS422 16-SSOP
標準包裝： 2,500
類型： 收發(fā)器
驅(qū)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： 16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-SSOP
包裝： 帶卷 (TR)
LTC2854/LTC2855
3
285455fb
The ● denotes the specications which apply over the full operating
temperature range, otherwise specications 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 = 27Ω, VCC = 3V (Figure 1)
R = 50Ω, VCC = 3.13V (Figure 1)
●
1.5
2
VCC
V
Δ|VOD|
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
R = 27Ω or R = 50Ω (Figure 1)
●
0.2
V
VOC
Driver Common Mode Output Voltage
R = 27Ω or R = 50Ω (Figure 1)
●
3V
Δ|VOC|
Change in Magnitude of Driver
Common Mode Output Voltage for
Complementary Output States
R = 27Ω or R = 50Ω (Figure 1)
●
0.2
V
IOZD
Driver Three-State (High Impedance)
Output Current on Y and Z
DE = OV, (Y or Z) = –7V, 12V (LTC2855)
●
±10
μA
IOSD
Maximum Driver Short-Circuit Current
–7V ≤ (Y or Z) ≤ 12V (Figure 2)
●
–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)
●
–100
125
μA
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)
●
–145
250
μA
RIN
Receiver Input Resistance
RE = VCC or 0V, DE = TE = 0V,
VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)
(C, I-Grade)
●
96
125
kΩ
RE = VCC or 0V, DE = TE = 0V,
VIN = –7V, –3V, 3V, 7V, 12V (Figure 3)
(H-Grade)
●
48
125
kΩ
VTH
Receiver Differential Input Threshold
Voltage
–7V ≤ B ≤ 12V
●
±0.2
V
ΔVTH
Receiver Input Hysteresis
B = 0V
25
mV
VOH
Receiver Output HIGH Voltage
I(RO) = –4mA, A-B = 200mV, VCC = 3V
●
2.4
V
VOL
Receiver Output LOW Voltage
I(RO) = 4mA, A-B = –200mV, VCC = 3V
●
0.4
V
IOZR
Receiver Three-State (High Impedance)
Output Current on RO
RE = VCC, 0V ≤ RO ≤ VCC
●
±1
μA
IOSR
Receiver Short-Circuit Current
0V ≤ RO ≤ VCC
●
±85
mA
RTERM
Receiver Input Terminating Resistor
TE = VCC, VAB = 2V, VB = –7V, 0V, 10V
(Figure 8)
●
108
120
156
Ω
Logic
VIH
Logic Input High Voltage
VCC = 3.6V
●
2V
VIL
Logic Input Low Voltage
VCC = 3V
●
0.8
V
IINL
Logic Input Current
●
0
±10
μA
Supplies
ICCS
Supply Current in Shutdown Mode
DE = 0V, RE = VCC, TE = 0V
(C, I-Grade)
(H-Grade)
●
0
5
15
μA
ICCR
Supply Current in Receive Mode
DE = 0V, RE = 0V, TE = 0V
●
370
900
μA
ELECTRICAL CHARACTERISTICS
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