Datasheet
Table Of Contents
- Table 1. Device summary
- 1 Pin configuration
- 2 Maximum ratings
- 3 Electrical characteristics
- Table 4. Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 3.6 V, TA = -40 to 85 ˚C, unless otherwise specified. Typical values are referred to TA = 25 ˚C)
- Table 5. Logic input electrical characteristics (C1 - C4 = 0.1 µF, VC = 3 V to 3.6 V, TA = - 40 to 85 ˚C, unless otherwise specified. Typical values are referred to TA = 25 ˚C)
- Table 6. Transmitter electrical characteristics (C1 - C4 = 0.1 µA VCC = 3 V to 3.6 V, TA = -40 to 85 ˚C, unless otherwise specified. Typical values are referred to TA = 25 ˚C)
- 3.1 Receiver electrical characteristics
- Table 7. Receiver electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 3.6 V, TA = -40 to 85 ˚C, unless otherwise specified. Typical values are referred to TA = 25 ˚C)
- Table 8. Timing characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 3.6 V, TA = -40 to 85 ˚C, unless otherwise specified. Typical values are referred to TA = 25 ˚C)
- 4 Application
- 5 Package mechanical data
- 6 Revision history

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