SP3223H Datasheet, PDF (15/23 Pages) Sipex Corporation – High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers

6
4
2
Vout+
Vout-
0
-2
-4
-6
Load Current Per Transmitter [mA]
Figure 21. SP3243H Driver Output Voltages vs. Load
Current per Transmitter
+
C5 0.1µF
28 _C1+
+
C1 0.1µF
24 C1-
+
C2 0.1µF
1 C2+
2 C2-
14 ^T1^IN
13 ^T2^IN
12 ^T3^IN
VCC
26
VCC
V+ ²⁷
+
C3 0.1µF
SP3243H _V- 3
T₁OUT ₉
T₂OUT ₁₀
T₃OUT ₁₁
C4 0.1µF
+
VCC
To µP Supervisor
Circuit
20 ^R2^OUT
19 ^R1^OUT
18 ^R2^OUT
17 ^R3^OUT
R₁IN ₄
5KΩ
R₂IN ₅
5KΩ
R₃IN ₆
16 ^R4^OUT
5KΩ
R₄IN ₇
15 ^R5^OUT
22
SHUTDOWN
23 _ONLINE
5KΩ
R₅IN ₈
5KΩ
21 _STATUS
GND
25
DB-9 Connector Pins:
1. Received Line Signal Detector
2. Received Data
3. Transmitted Data
4. Data Terminal Ready
5. Signal Ground (Common)
6. DCE Ready
7. Request to Send
8. Clear to Send
9. Ring Indicator
DB-9
Connector
6
7
8
9
1
2
3
4
5
Figure 22. Circuit for the connectivity of the SP3243H with a DB-9 connector
Rev. 6/30/03
SP3223H +3.0V to +5.5V RS-232 Transceivers
15
© Copyright 2003 Sipex Corporation