tF
參數(shù)資料
型號: AD7306JR
廠商: Analog Devices Inc
文件頁數(shù): 5/8頁
文件大?。?/td> 0K
描述: IC TXRX RS-232 RS-422 24-SOIC
標準包裝: 31
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 3/3
規(guī)程: RS232
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC W
包裝: 管件
AD7306
REV. B
–5–
t
PHL
t
PLH
1.5V
90% POINT
10% POINT
3V
0V
VO
0V
–VO
1/2 VO
t
SKEW
t
R
tF
t SKEW
90% POINT
10% POINT
T3
(B)
OUT
T3
(A)
Figure 4. RS-422 Driver. Propagation Delay Rise/Fall
Timing
t
PLH
t
PHL
2.5V
–2.5V
0V
VOL
VOH
R1OUT
DIFFERENTIAL
INPUT
R1
(B) - R1
(A)
IN
Figure 5. RS-422 Receiver Timing
tEN2
t
EN1
1.5V
VOL
VOH
R1OUT
232/422 SEL
VOL
VOH
RS-232
RS-422
RS-232
Figure 6. RS-232/RS-422 Receiver Enable Timing
R1
(B)
IN
±10V
POWER
SUPPLY
GENERATOR
T2 OUT
T1OUT
R2 OUT
R1 OUT
T1IN
T2 IN
R2 IN
AD7306
R1
RS-232
INPUT
RS-232
OUTPUTS
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
T3 IN
232/422 SEL
T3
(B)
OUT
T3
(A)
OUT
RS-422
OUTPUT
RS-232/
RS-422
INPUT
RS-422
INPUT
R1IN /R1IN (A)
8
9
15
17
R2
21
4
T3
7
2
3
23
22
24
1
0.1
F
0.1
F
0.1
F
0.1
F
+5V INPUT
VCC
V+
C1+
C1–
11
10
16
19
6
C2–
C2+
V–
T2
T1
20
5
0.1
F
14
18
Figure 1. AD7306 Application Circuit
T3
C
= 100pF
L1
T3
(B)
OUT
RL
= 100
DIFF
T3 IN
OUT
T3
(A)
C
= 100pF
L2
Figure 2. RS-422 Driver. Propagation Delay Test Circuit
T3
(B)
OUT
T3 IN
OUT
T3
(A)
RL DIFF
VOD
Figure 3. RS-422 Driver. Voltage Measurement Test
Circuit
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