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參數(shù)資料
| 型號(hào)： | SP488CT-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RCVR RS485/RS422 QUAD 16SOIC |
| 產(chǎn)品變化通告： | Product Discontinuation 21/Dec/2011 |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 類型： | 接收器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 0/4 |
| 規(guī)程： | RS422/RS485 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
5
SP488/489
Quad RS-485/RS-422 Line Receivers
Copyright 2000 Sipex Corporation
AC PARAMETERS
V
CC = 5V±5%; typicals at 25°C; 0°C ≤ TA ≤ +70°C unless otherwise noted.
PARAMETER
MIN.
TYP.
MAX.
UNIT
CONDITIONS
PROPAGATION DELAY
Receiver Input to Output
C
L = 15pF; Figure 1, 3
Low to HIGH (tPLH)
120
250
ns
High to LOW (tPH
L)
120
250
ns
Differential Receiver Skew (t
SKD)13
ns
Receiver Rise Time (t
R)
10% to 90%
SP488
30
70
ns
SP489
30
70
ns
Receiver Fall Time (t
F)
90% to 10%
SP488
20
40
ns
SP489
20
40
ns
RECEIVER ENABLE
To Output HIGH
70
150
ns
C
L = 15pF; Figures 2 and 4
(S2 closed)
To Output LOW
80
200
ns
CL = 15pF;
Figures 2 and 4
(S1 closed)
RECEIVER DISABLE
From Output LOW
70
150
ns
CL = 15pF;
Figures 2 and 4
(S1 closed)
From Output HIGH
70
150
ns
CL = 15pF;
Figures 2 and 4
(S2 closed)
Figure 4. Receiver Enable/Disable Timing
3V
0V
5V
VOH
0V
Output normally low
F = 1MHZ: tr < 10ns: tf < 10ns
tZL
tLZ
EN
VOL
1.5V
0.5V
1.5V
0.5V
Output normally high
RO
tZH
RO
tHZ
Figure 3. Receiver Propagation Delays
F = 1MHZ: tr < 10ns: tf < 10ns
tPHL
tPLH
VOL
0V
1.5V
RO
VOH
1.5V
–VOD
+VOD
Input A–B
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