ST3243CPR STMicroelectronics, ST3243CPR Datasheet

IC TXRX 5.5V RS232 PWRDWN 28SSOP

ST3243CPR

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

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST3243CPR
Manufacturer:
ST
Quantity:
10 764
Features
Description
The ST3243C device consists of 3 drivers, 5
receivers and a dual charge-pump circuit. The
device meets the requirements of EIA/TIA and
V.28/V.24 communication standards providing
high data rate capability.
The receiver R2 is always active to implement a
wake-up feature for serial port.
The ST3243C has a proprietary low-dropout
transmitter output stage enabling true RS-232
performance from a 3.0 V to 5.5 V supply with a
dual charge pump. The device is guaranteed to
run at data rates of 250 kbps while maintaining
RS-232 output levels.
The Auto-power-down feature functions when
FORCEON is low and FORCEOFF is high. During
this mode of operation, if the device does not
sense a valid RS-232 signal, the driver outputs
are disabled. If FORCEOFF is set low, both
drivers and receivers (expert R2B) are shut off,
and supply current is reduced to 1 mA.
Disconnecting the serial port or turning off the
peripheral drives causes the auto-power-down
condition to occur.
Table 1.
October 2009
ST3243CPR
1 µA supply current achieved when in auto-
power-down
250 kbps minimum guaranteed data rate
Guaranteed 6 V/µs slew rate range
Guaranteed mouse drive ability
0.1 µF external capacitors
Meet EIA/TIA-232 specifications down to 3 V
Available in SSOP-28
Order code
Device summary
Temperature range
0 to 70 °C
3 to 5.5 V, 400 kbps, RS-232 transceiver
SSOP-28 (tape and reel)
Doc ID 7539 Rev 9
Package
Auto-power-down can be disabled when
FORCEON and FORCEOFF are high, and should
be done when driving a serial mouse. With Auto-
power-down enabled, the device is activated
automatically when a valid signal is applied to any
receiver input.
Typical application are in notebook, sub-
notebook, palmtop computers, battery-powered
equipment, hand-held equipment, peripherals and
printers.
with auto-power-down
SSOP
1350 parts per reel
Packaging
ST3243C
www.st.com
1/15
15

Related parts for ST3243CPR

ST3243CPR Summary of contents

Page 1

... Disconnecting the serial port or turning off the peripheral drives causes the auto-power-down condition to occur. Table 1. Device summary Order code Temperature range ST3243CPR °C October 2009 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down Auto-power-down can be disabled when FORCEON and FORCEOFF are high, and should be done when driving a serial mouse ...

Page 2

Contents Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

ST3243C 1 Pin configuration Figure 1. Pin configuration Table 2. Pin description Pin n° Symbol ...

Page 4

Pin configuration Table 2. Pin description (continued) Pin n° Symbol 18 R2 OUT 19 R1 OUT 20 R2 OUTB 21 INVALID 22 FORCEOFF 23 FORCEON GND ...

Page 5

ST3243C 2 Maximum ratings Table 4. Absolute maximum ratings Symbol V Supply voltage CC V+ Doubled voltage terminal V- Inverted voltage terminal V+ +|V-| FORCEON, Input voltage FORCEOFF Receiver input voltage range IN T Transmitter output voltage ...

Page 6

Electrical characteristics 3 Electrical characteristics 0.1 µ values are referred to T Table 5. Electrical characteristics Symbol Parameter I Supply current auto-power-down ASHDN I Shutdown supply current SHDN Supply current auto-power-down I SUPPLY ...

Page 7

ST3243C Table 7. Auto-power-down electrical characteristics (continued) Symbol Parameter Receiver positive or negative t INVH threshold to INVALID HIGH Receiver positive or negative t INVL threshold to INVALID LOW 0.1 µ values are ...

Page 8

Electrical characteristics 0.1 µ values are referred to T Table 10. Timing characteristics Symbol Parameter D Maximum data rate R t PHL Receiver propagation delay R t PLH t Transmitter skew T_SKEW t ...

Page 9

ST3243C 4 Application Figure 2. Application circuits Table 11. Capacitance value (µ 3.0 to 3.6 0.1 4.5 to 5.5 0.047 3.0 to 5.5 0. 0.1 0.1 0.33 0.33 1.0 1.0 Doc ID 7539 Rev 9 ...

Page 10

Typical performance characteristics 5 Typical performance characteristics Unless otherwise specified T Figure 3. Invalid high threshold time Figure 5. Receiver propagation delay Figure 7. Output current vs. output high voltage 10/ °C J Figure 4. Invalid low threshold ...

Page 11

ST3243C 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

Page 12

Package mechanical data Dim. Min 0.050 A2 1.65 b 0.22 c 0.09 D 9 0° L 0.55 12/15 SSOP28 mechanical data mm. Typ. Max. 2 1.75 1.85 0.38 0.25 10.2 10.5 7.8 ...

Page 13

ST3243C Tape & reel SSOP28 mechanical data Dim. Min 12 8.4 Bo 10.7 Ko 2.9 Po 3.9 P 11.9 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 22.4 8.6 0.331 10.9 ...

Page 14

Revision history 7 Revision history Table 12. Document revision history Date Revision 19-Sep-2004 6 31-Mar-2006 7 12-Nov-2007 8 21-Oct-2009 9 14/15 Document updating. Order codes updated. Added Table 1. Modified Table 1 on page 1. Doc ID 7539 Rev 9 ...

Page 15

... ST3243C Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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