View ST3222_106368.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ST3222
3 TO 3.6V, LOW POWER, UP TO 400KBPS, RS-232 DRIVERS AND RECEIVERS
s s
s s
s
300A SUPPLY CURRENT 250Kbps MINIMUM GUARENTEED DATA RATE 6V/s MINIMUM GUARANTEED SLEW RATE MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V AVAILABLE IN SO-18 AND TSSOP20
SOP TSSOP
DESCRIPTION The ST3222 is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements and high data-rate capabilities. ST3222 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 3.6V power supplies. The device requires only four small 0.1F standard external capacitors for operating from 3V supply. The ST3222 has two receivers and two drivers. The ST3222 features a 1A shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1A supply current. The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels. ORDERING CODES
Type ST3222CD ST3222BD ST3222CDR ST3222BDR ST3222CTR ST3222BTR Temperature Range 0 to 70 C -40 to 85 C 0 to 70 C -40 to 85 C 0 to 70 C -40 to 85 C Package
Typical applications are Notebook, Subnotebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers.
Comments 50parts per tube / 20tube per box 50parts per tube / 20tube per box 1000 parts per reel 1000 parts per reel 2500 parts per reel 2500 parts per reel
SO-18 (Tube) SO-18 (Tube) SO-18 (Tape & Reel) SO-18 (Tape & Reel) TSSOP20 (Tape & Reel) TSSOP20 (Tape & Reel)
October 2002
1/9
ST3222
PIN CONFIGURATION
SO-18 TSSOP20
PIN DESCRIPTION
PlN N (SO-18) 1 PlN N (TSSP20) 1 SYMBOL EN NAME AND FUNCTION Receiver Enable Control. Drive low for normal operation. Drive high to force the receivers outputs (R_OUT) into a high-impedance state. Positive Terminal for the first Charge Pump Capacitor 5.5V Generated By The Charge Pump. Negative Terminal for the first Charge Pump Capacitor Positive Terminal for the second Charge Pump Capacitor Negative Terminal for the second Charge Pump Capacitor -5.5V Generated By The Charge Pump. Second Transmitter Output Voltage Second Receiver Input Voltage Second Receiver Output Voltage Not Connected Second Transmitter Input Voltage First Transmitter Input Voltage Not Connected First Receiver Output Voltage First Receiver Input Voltage First Transmitter Output Voltage Ground Supply Voltage Active Low Shutdown Control Input. Drive Low To Shut-down Trnasmittes And Charge Pump
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
C1+ V+ C1C2+ C2VT2OUT R2IN R2OUT NC T2IN T1IN NC R1OUT R1IN T1OUT GND VCC SHDN
2/9
ST3222
ABSOLUTE MAXIMUM RATINGS
Symbol VCC V+ VV+ +|V-| TIN SHDN RIN TOUT ROUT tSHORT Supply Voltage Doubled Voltage Terminal Inverted Voltage Terminal Transmitter Input Voltage Range Transmitter Input Voltage Range Receiver Input Voltage Range Transmitter Output Voltage Range Receiver Output Voltage Range Transmitter Output Short to GND Time Parameter Value -0.3 to 6 (VCC - 0.3) to 7 0.3 to -7 13 -0.3 to 6 -0.3 to 6 25 13.2 -0.3 to (VCC + 0.3) Continuous Unit V V V V V V V V V
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.
ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1F, VCC = 3V to 3.6V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol Parameter No Load No Load Test Conditions VCC = 3.3V VCC = 3.3V TA = 25C TA = 25C Min. Typ. 0.3 1 Max. 1 10 Unit mA A ISUPPLY VCC Power Supply Current ISHDN SHUTDOWN Supply Current
SHDN=VCC SHDN=VCC
LOGIC INPUT ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1F, VCC = 3V to 3.6V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol VIL VIH VHYS IIL Parameter Input Logic Threshold Low Input Logic Threshold High Transmitter Input Histeresys Input Leakage Current VCC = 3.3V Test Conditions T-IN, EN, SHDN (Note 1) 2 0.5 T-IN, EN, SHDN 0.01 1 Min. Typ. Max. 0.8 Unit V V V A
Note 1: Transmitter input hysteresis is typically 250mV
TRANSMITTER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1F VCC = 3V to 3.6V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol VTOUT RTOUT ITSC ITOL Parameter Output Voltage Swing Transmitter Output Resistance Output Short Circuit Current Output Leakage Current Test Conditions All Transmitter outputs are loaded with 3K to GND VCC = V+ = V- = 0V VOUT = 2V Min. 5 300 Typ. 5.4 10M 60 VCC = 0V or 3V to 3.6V Transmitters Disable VOUT = 12V 25 Max. Unit V mA A
3/9
ST3222
RECEIVER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1F VCC = 3V to 3.6V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol IOL VRIN VRIL VRIH RRIN VROL VROH Parameter Output Leakage Current Receiver Input Voltage Operating Range Input Threshold Low Input Threshold High Input Resistance TTL/CMOS Output Voltage Low TTL/CMOS Output Voltage High Test Conditions R-OUT, EN = VCC, Receiver Disabled -25 TA = 25C TA = 25C TA = 25C IOUT = 1.6mA IOUT = -1mA VCC-0.6 VCC-0.1 VCC = 3.3V VCC = 3.3V 3 0.6 1.2 1.5 0.5 5 7 0.4 2.4 Min. Typ. 0.05 Max. 10 25 Unit A V V V V K V V
VRIHYS Input Hysteresis
TIMING CHARACTERISTICS (C1 - C4 = 0.1F, VCC = 3V to 3.6V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol DR tPHLR tPLHR |tPHLT - tTHL| tOER tODR |tPHLR - tTHR| SRT Parameter Data Transfer Rate Propagation Delay Input to Output Transmitter Propagation Delay Difference Test Conditions RL = 3K CL2= 1000pF one trasmitter switching RXIN to RXOUT CL = 150pF (Note 1) Min. 240 Typ. 400 0.2 100 200 200 50 Max. Unit Kbps s ns ns ns ns
Receiver Output Enable Normal Operation Time Receiver Output Disable Normal Operation Time Receiver Propagation Delay Difference Trnasition Slew Rate TA = 25C RL = 3K to 7K VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF
6 4
30 30
V/s V/s
Transmitter Skew is measured at the transmitter zero cross points
4/9
ST3222
APPLICATION CIRCUITS
CAPACITANCE VALUE (F)
C1 0.1 C2. 0.1 C3 0.1 C4 0.1 Cbypass 0.1
5/9
ST3222
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25C) Figure 1 : Driver Voltage Transfer Characteristics for Trasmitter Inputs Figure 3 : Output Current vs Output Low Voltage
Figure 2 : Driver Voltage Transfer Characteristics for Receiver Inputs
Figure 4 : Output Current vs Output High Voltage
6/9
ST3222
SO-18 MECHANICAL DATA
mm. DIM. MIN. TYP MAX. MIN. TYP. MAX. inch
A A1 A2 B C D E e H h k L
2.35 0.1
2.65 0.3 2.55
0.092 0.004
0.104 0.012 0.100
0.33 0.23 11.35 7.4 1.27 10.00 0.25 8 0.4
0.51 0.32 11.75 7.6
0.013 0.009 0.447 0.291 0.050
0.020 0.012 0.462 0.299
10.65 0.75 (max.) 1.27
0.393 0.010
0.419 0.029
0.016
0.050
h x 45u A2
A K L H
B
0.10mm .004 Seating Plane
e
A1
C
D
18
10
1
9
SO18
E
0070768
7/9
ST3222
TSSOP20 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 6.4 6.2 4.3 6.5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.260 0.260 0.176 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0087225C
8/9
ST3222
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com
9/9

▲Up To Search▲

Price & Availability of ST3222

	To Download ST3222 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .