SP3220EBCT 데이터 시트보기 (PDF) - Signal Processing Technologies
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SP3220EBCT Datasheet PDF : 21 Pages
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®
SP3220E/EB/EU
+3.0V to +5.5V RS-232 Driver/Receiver Pair
■ Meets All EIA-232 and ITU V.28 Specifications
from a wide +3.0V to +5.5V power supply
● Interoperable with RS232 and V.28 at 2.7V
■ Supports High Serial DataRates:
EN 1
C1+ 2
● 120 kbps SP3220E
● 250 kbps SP3220EB
● 1 Mbps SP3220EU
V+ 3
C1- 4
■
■
1µA Low Power Shutdown Mode
Footprint Compatible with MAX3221E, ISL3221
C2+
5
■ 4 x 0.1µF External Charge Pump Capacitors C2- 6
■ Tri–State/Receiver Enable
■ Improved ESD Specifications:
V- 7
● +15kV Human Body Model
● +15kV IEC1000-4-2 Air Discharge
R1IN 8
● +8kV IEC1000-4-2 Contact Discharge
SP3220
E/EB/EU
16 SHDN
15 VCC
14 GND
13 T1OUT
12 No Connect
11 T1IN
10 No Connect
9 R1OUT
DESCRIPTION
Available in Lead Free Packaging
The SP3220E devices are RS-232 driver/receiver solutions intended for portable or hand-held
applications such as palmtop computers, instrumentation and consumer products. These
devices incorporate a high-efficiency charge-pump power supply that allows the SP3220E
devices to deliver true RS-232 performance from a single power supply ranging from +3.0V
to +5.0V. This charge pump requires only 0.1µF capacitors in 3.3V operation. The ESD
tolerance of these devices is over ±15kV for both Human Model and IEC1000-4-2 Air discharge
test methods. All devices have a low-power shutdown mode where the driver outputs and
charge pumps are disabled. During shutdown, the supply current falls to less than 1µA.
Date: 8/30/D05ate: 8/22/05
VCC
C5 +0.1µF
C1 + 0.1µF
C2 + 0.1µF
2 C1+
4 C1-
5 C2+
6 C2-
15
VCC
SP3220
E/EB/EU
V+ 3
*C3 + 0.1µF
V- 7
C4 0.1µF
+
LOGIC
INPUTS
LOGIC
OUTPUTS
11 T1IN
9 R1OUT
1 EN
T1OUT 13
R1IN 8
5k1
SHDN 16
RS-232
OUTPUTS
RS-232
INPUTS
GND
14
*can be returned to
either VCC or GND
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