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參數(shù)資料
| 型號(hào)： | SP3491EN-L/TR |
| 廠(chǎng)商： | Exar Corporation |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS485 FULL DUPLX 14NSOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類(lèi)型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS485 |
| 電源電壓： | 3.3V |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOIC（窄型） |
| 包裝： | 帶卷 (TR) |
5
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP3490_349_02_0270
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
SP3491 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V ≤ V
CM ≤ +12V
Input Hysteresis
25
mV
V
CM = 0V
Output Voltage HIGH
Vcc-0.4
Volts
I
O = -.5mA, VID = +200mV
Output Voltage LOW
0.4
Volts
I
O = +2.5mA, VID = -200mV
Three-State ( High Impedance)
Output Current
+/-
A
0V ≤ V
O ≤ Vcc; REB = Vcc
Input Resistance
2
5
k
-7V ≤ V
CM ≤ +12V
Input Current (A, B); V
IN = 2V
+.0
mA
DE = 0V, V
CC = 0V or 3.6V,
V
IN = 2V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or 3.6V,
V
IN = -7V
Short Circuit Current
60
mA
0V ≤ V
O ≤ VCC
SP3491 RECEIVER
AC Characteristics
Max. Transmission Rate
0
Mbps REB = 0V, DE = 0V
Receiver Input to Output, t
PLH
40
70
20
ns
Figures 6 and 2
Receiver Input to Output, t
PLH
85
ns
T
AMB = +25°C, Vcc = 3.3V, Figures
6 and 2
Receiver Input to Output, t
PHL
40
70
20
ns
Figures 6 and 2
Receiver Input to Output, t
PHL
85
ns
T
AMB = +25°C, Vcc = 3.3V, Figures
6 and 2
Differential Receiver Skew
4
ns
|t
PHL(A)- tPLH(A)|, |tPHL(B)- tPLH(B)|,
Figures 6 and 2
Receiver Enable to Output
LOW
65
50
ns
Figures 7 and 3; S
Closed, S2
open
Receiver Enable to Output
HIGH
65
50
ns
Figures 7 and 3; S
2 Closed, S
open
Receiver Disable from LOW
65
200
ns
Figures 7 and 3; S
Closed, S2
open
Receiver Disable from HIGH
65
200
ns
Figures 7 and 3; S
2 Closed, S
open
POWER REQUIREMENTS
Supply Voltage
+3.0
+3.6
V
Supply Current
000
2000
A
REB, D = 0V or V
CC; DE = VCC
Supply Current
800
500
A
DE = 0V
ESD Protection for R, D, DE,
REB, A, B, Y and Z pins
+/-2
kV
Human Body Model
ELECTRICAL CHARACTERISTICS
T
AMB = TMIN to TMAX and VCC = +3.3V +/-5% unless otherwise noted.
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