ST3222ECPR [STMICROELECTRONICS]
【15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER, UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS; 【 15kV ESD保护，3至5.5V ，低功耗，高达250kbps ， RS - 232驱动器和接收
| 型号： | ST3222ECPR |
| 厂家： | 
ST |
| 描述： | 【15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER, UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS |
| 文件： | 总10页 (文件大小：201K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ST3222E
±15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER,
UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS
■
ESD PROTECTIO FOR RS-232 I/O PINS
±15KV HUMAN BODY MODEL
±8KV IEC 1000-4-2 CONTACT DISCHARGE
■
■
300µA SUPPLY CURRENT
250Kbps MINIMUM GUARENTEED DATA
RATE
■
■
6V/µs MINIMUM GUARANTEED SLEW RATE
MEET EIA/TIA-232 SPECIFICATIONS DOWN
TO 3V
SOP
SSOP
■
AVAILABLE IN SO-18, SSOP20 AND
TSSOP20
DESCRIPTION
The ST3222E is a 3V powered EIA/TIA-232 and
V.28/V.24 communications interface with low
power requirements, high data-rate capabilities
and enhanced electrostatic discharge (ESD)
protection to ±8kV using IEC1000-4-2 Contact
Discharge and ±15kV using the Human Body
Model. ST3222E has a proprietary low dropout
transmitter output stage providing true RS-232
performance from 3 to 5V supplies with a dual
charge pump. The charge pump requires only four
small 0.1mF external capacitors for operation form
3V supply.
The device has two receivers and two drivers. The
ST3222E features a 1µA shutdown mode that
reduces power consumption and extends battery
life in portable systems. Its receivers can remain
active in shutdown mode, allowing external
TSSOP
devices such as modems to be monitored using
only 1µA supply current.
The device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Subnotebook
and Palmtop Computers, Battery Powered
Equipment, Hand-Held Equipment, Peripherals
and Printers.
ORDERING CODES
Temperature
Type
Package
SO-18 (Tube)
Comments
Range
ST3222ECD
ST3222EBD
0 to 70 °C
-40 to 85 °C
0 to 70 °C
50parts per tube / 20tube per box
50parts per tube / 20tube per box
1000 parts per reel
SO-18 (Tube)
ST3222ECDR
ST3222EBDR
ST3222ECPR
ST3222EBPR
ST3222ECTR
ST3222EBTR
SO-18 (Tape & Reel)
SO-18 (Tape & Reel)
SSOP20 (Tape & Reel)
SSOP20 (Tape & Reel)
TSSOP20 (Tape & Reel)
TSSOP20 (Tape & Reel)
-40 to 85 °C
0 to 70 °C
1000 parts per reel
1350 parts per reel
-40 to 85 °C
0 to 70 °C
1350 parts per reel
2500 parts per reel
-40 to 85 °C
2500 parts per reel
March 2003
1/10
ST3222E
PIN CONFIGURATION
SO-18
SSOP20/TSSOP20
PIN DESCRIPTION
PlN N°
PlN N°
(SSOP20 TSSP20)
SYMBOL
NAME AND FUNCTION
(SO-18)
1
1
EN
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
C +
2
3
4
2
3
4
1
V+
5.5V Generated By The Charge Pump.
Negative Terminal for the first Charge Pump
Capacitor
C -
1
Positive Terminal for the second Charge Pump
Capacitor
C +
5
6
5
6
2
Negative Terminal for the second Charge Pump
Capacitor
C -
2
7
8
7
V-
-5.5V Generated By The Charge Pump.
Second Transmitter Output Voltage
T2
8
OUT
R2
Second Receiver Input Voltage
Second Receiver Output Voltage
9
9
IN
R2
10
10
11
12
13
14
15
16
17
18
19
20
OUT
NC
Not Connected
T2
Second Transmitter Input Voltage
11
12
IN
T1
First Transmitter Input Voltage
IN
NC
Not Connected
R1
First Receiver Output Voltage
13
14
15
16
17
18
OUT
R1
First Receiver Input Voltage
IN
T1
First Transmitter Output Voltage
OUT
GND
Ground
V
Supply Voltage
CC
SHDN
Active Low Shutdown Control Input. Drive Low To
Shut-down Transmittes And Charge Pump
2/10
ST3222E
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.3 to 6
V
CC
Doubled Voltage Terminal
Inverted Voltage Terminal
(V - 0.3) to 7
V+
V
V
V
V
V
V
CC
V-
0.3 to -7
13
V+ +|V-|
T
Transmitter Input Voltage Range
-0.3 to 6
-0.3 to 6
± 25
IN
SHDN
Transmitter Input Voltage Range
Receiver Input Voltage Range
R
IN
T
Transmitter Output Voltage Range
Receiver Output Voltage Range
Transmitter Output Short to GND Time
± 13.2
V
V
OUT
R
-0.3 to (V + 0.3)
OUT
CC
t
Continuous
SHORT
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.
SHUTDOWN AND ENABLE CONTROL TRUTH TABLE
SHDN
EN
T-OUT
R-OUT
0
0
1
1
0
1
0
1
High Z
High Z
Active
Active
Active
High Z
Active
High Z
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
Symbol
Parameter
Test Conditions
Human Body Model
IEC-1000-4-2
Min.
Typ.
Max.
Unit
ESD ESD Protection Voltage
ESD ESD Protection Voltage
±15
±8
kV
kV
ELECTRICAL CHARACTERISTICS
(C - C = 0.1µF, V = 3V to 5.5V, T = -40 to 85°C, unless otherwise specified.
1
4
CC
A
Typical values are referred to T = 25°C)
A
Symbol
Parameter
Test Conditions
SHDN=V T = 25°C
Min.
Typ.
0.3
1
Max.
1
Unit
mA
µA
I
V
Power Supply Current No Load
SUPPLY
CC
CC A
I
SHUTDOWN Supply
Current
No Load
SHDN=V T = 25°C
10
SHDN
CC A
LOGIC INPUT ELECTRICAL CHARACTERISTICS
(C - C = 0.1µF, V = 3V to 5.5V, T = -40 to 85°C, unless otherwise specified.
1
4
CC
A
Typical values are referred to T = 25°C)
A
Symbol
Parameter
Input Logic Threshold Low T-IN, EN, SHDN (Note 1)
Test Conditions
Min.
Typ.
Max.
Unit
V
V
0.8
IL
V
Input Logic Threshold High
V
V
= 3.3V
= 5V
2
V
IH
CC
CC
2.4
V
Transmitter Input
Histeresys
0.25
V
HYS
I
Input Leakage Current
T-IN, EN, SHDN
± 0.01
± 1
µA
IL
Note 1: Transmitter input hysteresis is typically 250mV
3/10
ST3222E
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C - C = 0.1µF V = 3V to 5.5V, T = -40 to 85°C, unless otherwise specified.
1
4
CC
A
Typical values are referred to T = 25°C)
A
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
Output Voltage Swing
All Transmitter outputs are loaded with
± 5
± 5.4
V
TOUT
3KΩ to GND
R
Transmitter Output
Resistance
V
= V+ = V- = 0V
V
= ± 2V
300
10M
Ω
TOUT
CC
OUT
OUT
I
Output Short Circuit Current
Output Leakage Current
± 60
mA
TSC
I
V
= 0V or 3V to 3.6V
V
= ± 12V
± 25
µA
TOL
CC
Transmitters Disable
RECEIVER ELECTRICAL CHARACTERISTICS
(C - C = 0.1µF V = 3V to 5.5V, T = -40 to 85°C, unless otherwise specified.
1
4
CC
A
Typical values are referred to T = 25°C)
A
Symbol
Parameter
Test Conditions
R-OUT, EN = V , Receiver Disabled
Min.
Typ.
Max.
± 10
25
Unit
µA
V
I
Output Leakage Current
± 0.05
OL
CC
V
Receiver Input Voltage
Operating Range
-25
RIN
V
Input Threshold Low
T = 25°C
V
V
V
V
= 3.3V
= 5V
0.6
0.8
1.2
1.5
1.5
1.8
0.5
5
V
V
RIL
A
CC
CC
CC
CC
T = 25°C
A
V
Input Threshold High
T = 25°C
= 3.3V
= 5V
2.4
2.4
RIH
A
T = 25°C
A
V
Input Hysteresis
V
KΩ
V
RIHYS
R
Input Resistance
Output Voltage Low
Output Voltage High
T = 25°C
3
7
RIN
ROL
ROH
A
V
I
I
= 1.6mA
= -1mA
0.4
OUT
OUT
V
V
-0.6
V
-0.1
V
CC
CC
TIMING CHARACTERISTICS
(C - C = 0.1µF, V = 3V to 5.5V, T = -40 to 85°C, unless otherwise specified.
1
4
CC
A
Typical values are referred to T = 25°C)
A
Symbol
Parameter
Test Conditions
= 1000pF
Min.
Typ.
Max.
Unit
D
Data Transfer Rate
R = 3KΩ
C
L2
250
Kbps
R
L
one trasmitter switching
to R C = 150pF
t
t
Propagation Delay Input to
Output
R
0.15
200
µs
PHLR
XIN
XOUT
L
PLHR
|t
- t
Transmitter Propagation
Delay Difference
(Note 1)
ns
PHLT
|
THL
t
Receiver Output Enable
Time
Normal Operation
Normal Operation
50
50
50
ns
ns
ns
OER
t
Receiver Output Disable
Time
ODR
|t
Receiver Propagation Delay
Difference
PHLR
- t
|
THR
S
Trnasition Slew Rate
T = 25°C R = 3KΩ to 7KΩ
V
= 3.3V
CC
RT
A
L
measured from +3V to -3V or -3V to +3V
C = 150pF to 1000pF
6
4
30
30
V/µs
V/µs
L
C = 150pF to 2500pF
L
(Note 1) Transmitter Skew is measured at the transmitter zero cross points
4/10
ST3222E
APPLICATION CIRCUITS
CAPACITANCE VALUE (µF)
V
C1
C2
C3
C4
Cbypass
CC
3.0 to 3.6
4.5 to 5.5
3.0 to 5.5
0.1
0.047
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.33
0.47
0.33
0.47
0.33
0.47
5/10
ST3222E
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T = 25°C)
j
Figure 1 : Output Current vs Output High Voltage
Figure 2 : Output Current vs Output High Voltage
Figure 3 : Output Current vs Output Low Voltage
Figure 4 : Output Current vs Output Low Voltage
Figure 5 : Voltage Transfer Characteristics
for Trasmitter Inputs
Figure 6 : Receiver Input Resistance
6/10
ST3222E
SO-18 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
2.35
0.1
TYP
MAX.
2.65
0.3
MIN.
0.092
0.004
MAX.
0.104
0.012
0.100
0.020
0.012
0.462
0.299
A
A1
A2
B
2.55
0.51
0.32
11.75
7.6
0.33
0.23
11.35
7.4
0.013
0.009
0.447
0.291
C
D
E
e
1.27
0.050
H
h
10.00
0.25
10.65
0.75
0.393
0.010
0.419
0.029
k
8
˚ (max.)
L
0.4
1.27
0.016
0.050
h x 45û
A
2A
K
B
e
A1
H
C
0.10mm
L
.004
Seating Plane
D
18
10
E
1
9
SO18
0070768
7/10
ST3222E
SSOP20 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
A1
A2
b
2
0.079
0.05
1.65
0.22
0.09
6.9
0.002
0.065
0.009
0.004
0.272
0.291
0.197
1.75
1.85
0.38
0.25
7.5
0.069
0.073
0.015
0.010
0.295
0.323
0.220
c
D
7.2
7.8
0.283
0.307
E
7.4
8.2
E1
e
5
5.3
5.6
0.209
0.65 BSC
4˚
0.0256 BSC
4˚
K
0˚
8˚
0˚
8˚
L
0.55
0.75
0.95
0.022
0.030
0.037
A2
A
K
L
b
e
A1
E
c
D
E1
PIN 1 IDENTIFICATION
1
0061436C
8/10
ST3222E
TSSOP20 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.0079
0.260
0.260
0.176
A
A1
A2
b
0.05
0.8
0.15
1.05
0.30
0.20
6.6
0.002
0.031
0.007
0.004
0.252
0.244
0.169
0.004
0.039
1
0.19
0.09
6.4
c
D
6.5
6.4
0.256
0.252
E
6.2
6.6
E1
e
4.3
4.4
4.48
0.173
0.65 BSC
0.0256 BSC
K
0˚
8˚
0˚
8˚
L
0.45
0.60
0.75
0.018
0.024
0.030
A2
A
K
L
b
e
A1
E
c
D
E1
PIN 1 IDENTIFICATION
1
0087225C
9/10
ST3222E
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.
© The ST logo is a registered trademark of STMicroelectronics
© 2003 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.
© http://www.st.com
10/10
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