elecTrical characTerisTics The l denotes the specifications which app" />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� LTC2852CS#TRPBF
寤犲晢锛� Linear Technology
鏂囦欢闋佹暩(sh霉)锛� 13/18闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC TXRX RS485/RS422 14-SOIC
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 2,500
椤炲瀷锛� 鏀剁櫦(f膩)鍣�
椹�(q奴)鍕曞櫒/鎺ユ敹鍣ㄦ暩(sh霉)锛� 1/1
瑕�(gu墨)绋嬶細 RS422锛孯S485
闆绘簮闆诲锛� 3 V ~ 3.6 V
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 14-SOIC锛�0.154"锛�3.90mm 瀵級
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 14-SOIC
鍖呰锛� 甯跺嵎 (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掳C. VCC = 3.3V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Driver
|VOD|
Differential Driver Output Voltage
R = 鈭�, VCC = 3V (Figure 1)
R = 27
惟, VCC = 3V (Figure 1)
R = 50
惟, VCC = 3.13V (Figure 1)
l
1.5
2
VCC
V
螖|VOD|
Difference in Magnitude of Driver Differential
Output Voltage for Complementary Output
States
R = 27
惟 or 50惟 (Figure 1)
l
0.2
V
VOC
Driver Common Mode Output Voltage
R = 27
惟 or 50惟 (Figure 1)
l
3
V
螖|VOC|
Difference in Magnitude of Driver Common
Mode Output Voltage for Complementary
Output States
R = 27
惟 or 50惟 (Figure 1)
l
0.2
V
IOZD
Driver Three-State (High Impedance) Output
Current on Y and Z
DE = 0V, (Y or Z) = 鈥�7V, 12V (LTC2852)
l
卤10
A
IOSD
Maximum Driver Short-Circuit Current
鈥�7V 鈮� (Y or Z) 鈮� 12V (Figure 2)
l
鈥�250
卤180
卤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 = 鈥�7V,
(Figure 3) (C, I-Grade)
l
鈥�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 = 鈥�7V,
(Figure 3) (H-Grade)
l
鈥�145
250
A
RIN
Receiver Input Resistance
RE = VCC or 0V, DE = TE = 0V,
VIN = 鈥�7V, 鈥�3V, 3V, 7V, 12V (Figure 3)
(C, I-Grade)
l
96
125
k
RE = VCC or 0V, DE = TE = 0V,
VIN = 鈥�7V, 鈥�3V, 3V, 7V, 12V (Figure 3)
(H-Grade)
l
48
125
k
VTH
Receiver Differential Input Threshold Voltage 鈥�7V 鈮� B 鈮� 12V
l
卤0.2
V
螖VTH
Receiver Input Hysteresis
B = 0V
25
mV
VOH
Receiver Output High Voltage
I(RO) = 鈥�4mA, A-B = 200mV, VCC = 3V
l
2.4
V
VOL
Receiver Output Low Voltage
I(RO) = 4mA, A-B = 鈥�200mV, VCC = 3V
l
0.4
V
IOZR
Receiver Three-State (High Impedance)
Output Current on RO
RE = VCC, 0V 鈮� RO 鈮� VCC (LTC2850, LTC2852)
l
卤1
A
IOSR
Receiver Short-Circuit Current
0V 鈮� RO 鈮� VCC
l
卤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
卤10
A
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