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PDF UT3222 Data sheet ( Hoja de datos )
| Número de pieza | UT3222 | |
| Descripción | 3V TO 5.5V MULTICHANNEL RS-232 LINE TRANSCEIVERS | |
| Fabricantes | UNISONIC TECHNOLOGIES | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
UT3222
Preliminary
3V TO 5.5V MULTICHANNEL
RS-232 LINE TRANSCEIVERS
WITH ±15kV ESD PROTECTION
CMOS IC
DESCRIPTION
The UTC UT3222 have two receivers and two transmitters, and a
dual ch arge-pump circuit with ±15kV ES D protection pin to pin
(serial-port con nection pins, i ncluding GND). The device meets the
requirements of TI A/EIA-232-F a nd provides t he e lectrical i nterface
between a n a synchronous communication contr oller and the
serial-port con nector. T he charg e pump and four sma ll ext ernal
capacitors allow operation from a single 3V t o 5.5V su pply. Th e
device operates a t data sign aling ra tes up to 250 kbit/s an d a
maximum of 30V/μS driver output slew rate.
The UTC UT3222 can be placed in the power-down mode by
setting PWRDOWN low, w hich draws only 1 μA from the p ower
supply. W hen the device is po wered do wn, the receive rs remain
active while the drivers are placed in the high-impedance state. Also,
during p ower down, th e o nboard c harge p ump is disabled; V+ is
lowered to VCC and V− is raised toward GND. Receiver outputs also
can be placed in the high-impedance state by setting EN high.
FEATURES
* RS-232 Bus-Pin ESD Protection Exceeds±15 kV Using
Human-Body Model (HBM)
* Meets or Exceeds the Requirements of TIA/EIA-232-F and
ITU v.28 Standards
* Operates With 3V to 5.5V VCC Supply
* Operates Up To 250 kbit/s
* Two Drivers and Two Receivers
* Low Standby Current 1μA Typical
* External Capacitors 4×0.1μF
* Accepts 5V Logic Input With 3.3V Supply
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UT3222L-P20-T
UT3222G-P20-T
UT3222L-P20-R UT
3222G-P20-R
TSSOP-20
Package Packing
TSSOP-20
TSSOP-20
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 7
QW-R502-986.a
http://www.Datasheet4U.com
1 page  
UT3222
Preliminary
CMOS IC
ELECTRICAL CH ARACTERISTICS over recom mended ra nges of supp ly v oltage an d o perating
free-air temperature (unless otherwise noted) (see Note 3 & Figure 1)
PARAMETER
Input Leakage Current
SYMBOL
TEST CONDITIONS
II ( EN , PWRDOWN )
MIN TYP MAX UNIT
(Note 1)
±0.01 ±1
μA
Supply Current
Supply Current (Powered Off)
ICC
No load, PWRDOWN at VCC
No load, PWRDOWN at GND
0.3 1 mA
1 10 μA
DRIVER SECTION
High-Level Output Voltage
VOH DOUT at RL=3kΩ to GND, DIN=GND
5
5.4
V
Low-Level Output Voltage
High-Level Input Current
VOL DOUT at RL=3kΩ to GND, DIN=VCC -5
IOH VI=VCC
-5.4
±0.01
±1
V
μA
Low-Level Input Current
IOL VI at GND
±0.01 ±1
μA
Short-Circuit Output Current
(Note 2)
IOS
VCC=3.6V, VOUT=0V
VCC=5.5V, VOUT=0V
±35 ±60 mA
±35 ±60 mA
Output Resistance
rO VCC, V+ and V- =0V, VOUT=±2V 300
10M
Ω
Output Leakage Current
PWRDOWN =GND, VCC=3V~3.6V,
IOFF
VOUT=±12V
PWRDOWN =GND, VCC=4.5~5.5V,
VOUT=±10V
±25 μA
±25 μA
RECEIVER SECTION
High-Level Output Voltage
VOH IOH=-1mA
Low-Level Output Voltage
VOL IOL=1.6mA
Positive-Going Input Threshold
Voltage
VIT+
VCC=3.3V
VCC=5
VCC-0.6V VCC- 0.1V
1.5
1.8
0.4
2.4
2.4
V
V
V
V
Negative-Going Input
Threshold Voltage
VIT-
VCC=3.3V 0.6
VCC=5
1.2
0.8 1.5
V
V
Input Hysteresis (VIT+~VIT-) V
HYS
0.3 V
Output Leakage Current
Input Resistance
IOFF EN=V CC
RI VI=±3V~±25V
±0.05 ±10 µA
3 5 7 kΩ
Notes: 1. All typical values are at VCC=3.3V or VCC=5V, and TA=25°C
2. Short-circuit durations should be controlled to prevent exceeding the device absolute power-dissipation
ratings, and not more than one output should be shorted at a time.
3. Test conditions are C1−C4=0.1μF at VCC=3.3V ± 0.3V; C1=0.047μF, C2−C4=0.33μF at VCC=5 V±0.5V.
4. Pulse skew is defined as |tPLH − tPHL| of each channel of the same device.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R502-986.a
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet UT3222.PDF ] | |
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