ST3243CPR STMicroelectronics, ST3243CPR Datasheet - Page 4

• Manufacturer Part Number: ST3243CPR
• Description: IC TXRX 5.5V RS232 PWRDWN 28SSOP
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST3243CPR

• Number Of Drivers/receivers: 5/3
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Data Rate: 0.4 Mbps
• Interface: EIA/TIA-232. RS-232. V.24. V.28
• Minimum Operating Temperature: 0 C
• Supply Current: 10 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3732-2

Pin configuration
Table 2.
Table 3.
1. If the part is in auto-power-down mode (FORCE OFF = V
4/15
are present on all receiver input
Pin n°
FORCE OFF
18
19
20
21
22
23
24
25
26
27
28
0
1
Pin description (continued)
Truth table
FORCEOFF
FORCEON
INVALID
Symbol
R2
R2
R1
GND
V
C
C
V+
OUTB
OUT
OUT
CC
1
1
+
-
ACTIVE
Second receiver output voltage
First receiver output voltage
Non-inverting complementary receiver output, always active for wake-up
Output of the valid signal detector. Indicates if a valid RS-232 level is present
on receiver inputs logic "1"
Drive low to shut down transmitters and on-board power supply. This over-
rides all automatic circuitry and FORCEON
Drive high to override automatic circuitry keeping transmitters on
(FORCEOFF must be high)
Negative terminal of voltage-charge pump capacitor
Ground
Supply voltage
5.5 V Generated by the charge pump
Positive terminal of voltage-charge pump capacitor
HIGH Z
T
OUT
(1)
Doc ID 7539 Rev 9
CC
, FORCE ON = GND) it is shutdown, if no valid RS-232 levels
ACTIVE
Name and function
HIGH Z
R
OUT
(1)
ACTIVE
ACTIVE
R
2OUTB
(1)
(1)
ST3243C