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ST3222CTR

P1-P3P4-P6P7-P9P10-P12P13-P13
Maximum ratings ST3222B - ST3222C
4/13 Doc ID 7512 Rev 7
2 Maximum ratings
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Externally applied V+ and V- can have a maximum magnitude of +7 V, but their absolute
addition can not exceed 13 V.
Running on internal charge pump, intrinsic self limitation allows exceeding those values
without any damage.
Startup voltage sequence (V
CC
, then V+, then V-) is critical, therefore it is not recommended
to use this device using externally applied voltage to V+ and V-.
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
CC
Supply voltage -0.3 to 6 V
V+ Doubled voltage terminal (V
CC
- 0.3) to 7 V
V- Inverted voltage terminal 0.3 to -7 V
V+ +|V-| 13 V
T
IN
Transmitter input voltage range -0.3 to 6 V
R
IN
Receiver input voltage range ± 25 V
T
OUT
Transmitter output voltage range ± 13.2 V
R
OUT
Receiver output voltage range -0.3 to (V
CC
+ 0.3) V
t
SHORT
Transmitter output short to gnd time Continuous
ST3222B - ST3222C Electrical characteristics
Doc ID 7512 Rev 7 5/13
3 Electrical characteristics
Note: Transmitter input hysteresis is typically 250 mV
Table 4. Electrical characteristics (C
1
- C
4
= 0.1 µF, V
CC
= 3 V to 3.6 V, T
A
= -40 to 85 °C, unless
otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
SUPPLY
V
CC
power supply
current
No load V
CC
= 3.3 V T
A
= 25 °C
SHDN = V
CC
0.3 1 mA
I
SHDN
SHUTDOWN supply
current
No load V
CC
= 3.3V T
A
= 25 °C
SHDN = GND
110µA
Table 5. Logic input electrical characteristics (C
1
- C
4
= 0.1 µF, V
C
= 3 V to 3.6 V,
T
A
= - 40 to 85 °C, unless otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
IL
Input logic threshold low T-IN, EN, SHDN (Note:)0.8V
V
IH
Input logic threshold
high
V
CC
= 3.3 V 2 V
V
HYS
Transmitter input
hysteresis
0.5 V
I
IL
Input leakage current T-IN, EN, SHDN ± 0.01 ± 1µA
Table 6. Transmitter electrical characteristics (C
1
- C
4
= 0.1 µA V
CC
= 3 V to 3.6 V,
T
A
= -40 to 85 °C, unless otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
TOUT
Output voltage swing
All transmitter outputs are loaded with
3 kΩ to GND
± 5 ± 5.4 V
R
TOUT
Transmitter output
resistance
V
CC
= V+ = V- = 0 V, V
OUT
= ± 2 V 300 10M Ω
I
TSC
Output short circuit
current
± 60 mA
I
TOL
Output leakage current
V
CC
= 0V or 3 V to 3.6 V, V
OUT
= ± 12 V
Transmitters disable
± 25 µA
Electrical characteristics ST3222B - ST3222C
6/13 Doc ID 7512 Rev 7
3.1 Receiver electrical characteristics
Table 7. Receiver electrical characteristics (C
1
- C
4
= 0.1 µF, V
CC
= 3 V to 3.6 V, T
A
= -40 to 85 °C,
unless otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
OL
Output leakage current R-OUT, EN = V
CC
, receiver disabled ± 0.05 ± 10 µA
V
RIN
Receiver Input voltage
operating range
-25 25 V
V
RIL
Input threshold low T
A
= 25 °C, V
CC
= 3.3 V 0.6 1.2 V
V
RIH
Input threshold high T
A
= 25 °C, V
CC
= 3.3 V 1.5 2.4 V
V
RIHYS
Input hysteresis 0.5 V
R
RIN
Input resistance T
A
= 25 °C 3 5 7 kΩ
V
ROL
TTL/CMOS output voltage
low
I
OUT
= 1.6 mA 0.4 V
V
ROH
TTL/CMOS output voltage
high
I
OUT
= -1 mA V
CC
-0.6 V
CC
-0.1 V
Table 8. Timing characteristics (C
1
- C
4
= 0.1 µF, V
CC
= 3 V to 3.6 V, T
A
= -40 to 85 °C, unless
otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
D
R
Data transfer rate
R
L
= 3 kΩ C
L2
= 1000 pF
one transmitter switching
240 400 Kbps
t
PHLR
t
PLHR
Propagation delay
input to output
R
XIN
to R
XOUT
, C
L
= 150 pF 0.2 µs
|t
PHLT
- t
THL
|
Tra ns mi tt er
propagation delay
difference
(1)
100 ns
t
OER
Receiver output
enable time
Normal operation 200 ns
t
ODR
Receiver output
disable time
Normal operation 200 ns
|t
PHLR
- t
THR
|
Receiver propagation
delay difference
50 ns
S
RT
Transition slew rate
T
A
= 25 °C, R
L
= 3 kΩ to 7 kΩ, V
CC
= 3.3 V
measured from +3 V to -3 V or -3 V to +3 V
C
L
= 150 pF to 1000 pF
C
L
= 150pF to 2500pF
6
4
30
30
V/µs
V/µs
1. Transmitter skew is measured at the transmitter zero cross points
P1-P3P4-P6P7-P9P10-P12P13-P13

ST3222CTR

Mfr. #:
Buy ST3222CTR
Manufacturer:
STMicroelectronics
Description:
IC DRVR/RCVR RS232 LP 20-TSSOP
Lifecycle:
New from this manufacturer.
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