參數(shù)資料
型號(hào): SP485REN-L/TR
廠商: Exar Corporation
文件頁(yè)數(shù): 5/9頁(yè)
文件大?。?/td> 0K
描述: IC TXRX RS485 HALF DUPLEX 8NSOIC
標(biāo)準(zhǔn)包裝: 2,500
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 1/1
規(guī)程: RS485
電源電壓: 5V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOICN
包裝: 帶卷 (TR)
5
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP485R_00_072309
Figure 6. Driver Propagation Delays
+3V
0V
DRIVER INPUT
A
B
DRIVER
OUTPUT
VO+
DIFFERENTIAL
OUTPUT
VA –VB
0V
VO
1.5V
tPLH
tF
tR
f ≥1MHz; tR ≤10ns; tF ≤10ns
VO 1/2VO
1/2VO
tPHL
tSKEW = |tDPLH- tDPHL|
tDPLH
tDPHL
Figure 7. Driver Enable and Disable Times
Figure 9. Receiver Enable and Disable Times
+3V
0V
DE
5V
VOL
A,B
0V
1.5V
tZL
tZH
f = 1MHz; tR < 10ns; tF < 10ns
VOH
A,B
2.3V
tLZ
tHZ
0.5V
Output normally LOW
Output normally HIGH
VOH
VOL
RECEIVER OUT
1.5V
tPHL
f = 1MHz; tR 10ns; tF ≤ 10ns
OUTPUT
VOD2+
VOD2
A – B
0V
tPLH
INPUT
+3V
0V
5V
0V
1.5V
tZL
tZH
f = 1MHz; tR ≤ 10ns; tF ≤ 10ns
RECEIVER OUT
1.5V
tLZ
tHZ
0.5V
Output normally LOW
Output normally HIGH
VIL
VIH
RE
RECEIVER OUT
Figure 8. Receiver Propagation Delays
SWITCHING WAVEFORMS
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