ST3243ECTR-E STMicroelectronics, ST3243ECTR-E Datasheet

IC TXRX RS232 400KBPS 28-TSSOP

ST3243ECTR-E

Manufacturer Part Number
ST3243ECTR-E
Description
IC TXRX RS232 400KBPS 28-TSSOP
Manufacturer
STMicroelectronics
Type
Transceiverr
Datasheet

Specifications of ST3243ECTR-E

Number Of Drivers/receivers
3/5
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
28-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6539-2
ST3243ECTR-E

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST3243ECTR-E
Manufacturer:
ST
Quantity:
8 000
Part Number:
ST3243ECTR-E
Manufacturer:
ST
0
Part Number:
ST3243ECTR-E
Manufacturer:
ST
Quantity:
20 000
Part Number:
ST3243ECTR-E
Manufacturer:
STM
Quantity:
9 093
Company:
Part Number:
ST3243ECTR-E
Quantity:
5 000
Company:
Part Number:
ST3243ECTR-E
Quantity:
203
Part Number:
ST3243ECTR-E@@@@@@
Manufacturer:
ST
0
Features
Description
The ST3243E 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 and enhanced
electrostatic discharge (ESD) protection. All
transmitter outputs and receiver input are
protected to ± 8 kV USING IEC 1000-4-2 contact
discharge and ± 15 kV using the human body
model. The receiver R2 is always active to
implement a wake-up feature for serial port.
The ST3243E 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.
Table 1.
October 2009
ST3243ECTR-E
ST3243EBTR
ESD protection for RS-232 I/O pins:
– ± 8 kV IEC 1000-4-2 contact discharge
– ± 15 kV human body model
1 µA supply current achieved when in auto
power-down
250 kbps minimum guaranteed data rate
Guaranteed 6 V/ms slew rate range
Guaranteed mouse drive ability
0.1 µF external capacitors
Meet EIA/TIA-232 specifications down to 3 V
Available in TSSOP28 package
Order codes
Device summary
Temperature range
± 15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232
- 40 to 85 °C
0 to 70 °C
Doc ID 8648 Rev 12
TSSOP28 (tape and reel)
TSSOP28 (tape and reel)
Package
transceiver with auto power-down
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 µA.
Disconnecting the serial port or turning off the
peripheral drives causes the auto power-down
condition to occur.
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, subnotebook,
palmtop computers, battery-powered equipment,
handheld equipment, peripherals and printers.
TSSOP
2500 parts per reel
2500 parts per reel
ST3243EB
ST3243EC
Packaging
www.st.com
1/16
16

Related parts for ST3243ECTR-E

ST3243ECTR-E Summary of contents

Page 1

... The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels. Table 1. Device summary Order codes Temperature range ST3243ECTR °C ST3243EBTR - °C October 2009 transceiver with auto power-down The auto power-down feature functions when FORCEON is low and FORCEOFF is high. During ...

Page 2

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

Page 3

ST3243EB, ST3243EC 1 Pin configuration Figure 1. Pin configuration Table 2. Pin description Pin n° Symbol C + Positive terminal of inverting charge pump capacitor 2 ...

Page 4

Pin configuration Table 2. Pin description (continued) Pin n° 4/16 Symbol R5 Fifth receiver output voltage OUT R4 Fourth receiver output voltage OUT R3 Third receiver ...

Page 5

ST3243EB, ST3243EC 2 Truth tables Table 3. Invalid truth table RS-232 Signal present at any receiver input Table 4. Output control truth table Force Force Valid receiver level ON OFF YES ...

Page 6

Maximum ratings 3 Maximum ratings Table 5. Absolute maximum ratings Symbol V Supply voltage CC V+ Doubled voltage terminal V- Inverted voltage terminal V+ +|V-| FORCEON, FORCEOFF, Input voltage Receiver input voltage range IN T Transmitter output ...

Page 7

ST3243EB, ST3243EC 4 Electrical characteristics 0.1 µF, V Typical values are referred to T Table 7. Electrical characteristics Symbol Parameter Supply current auto I ASHDN power-down I Supply current SUPPLY I Shutdown supply current SHDN C1 ...

Page 8

Electrical characteristics 0.1 µF, V Typical values are referred to T Table 9. Auto power-down electrical characteristics Symbol Parameter Receiver input threshold V to INVALID output voltage RITE HIGH (see Figure 3) Receiver input threshold V ...

Page 9

ST3243EB, ST3243EC 0.1 µF, V Typical values are referred to T Table 11. Receiver electrical characteristics Symbol Parameter Receiver input voltage V RIN operating range RS-232 Input threshold V RIL low RS-232 Input threshold V RIH ...

Page 10

Application circuits 5 Application circuits Figure 2. Application circuits Table 13. Required minimum capacitance value (µ 3.6 4.5 to 5.5 10/ 0.1 0.047 Doc ID 8648 Rev 12 ST3243EB, ST3243EC ...

Page 11

ST3243EB, ST3243EC 6 Timing diagrams Figure 3. Auto power-down input levels Figure 4. Auto power-down input timing Doc ID 8648 Rev 12 Timing diagrams 11/16 ...

Page 12

Package mechanical data 7 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 ...

Page 13

ST3243EB, ST3243EC Dim. Min 0.05 A2 0.8 b 0.19 c 0.09 D 9.6 E 6 0° L 0.45 TSSOP28 mechanical data mm. Typ. Max. 1.2 0.15 1 1.05 0.30 0.20 9.7 9.8 6.4 6.6 ...

Page 14

Package mechanical data Tape & reel TSSOP28 mechanical data Dim. Min 12 6.8 Bo 10.1 Ko 1.7 Po 3.9 P 11.9 14/16 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 22.4 ...

Page 15

ST3243EB, ST3243EC 8 Revision history Table 14. Document revision history Date Revision 21-Jun-2004 6 31-Mar-2006 7 25-Oct-2006 8 24-Aug-2007 9 09-Jul-2008 10 28-Jul-2009 11 16-Oct-2009 12 Page (output leakage current) mA ==> µA L Order codes updated ...

Page 16

... 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. ...

Related keywords