SP3249E 반도체 회로 부품 판매점
Intelligent +3.0V to +5.5V RS-232 Transceiver
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 Exar |
SP3249E
Intelligent +3.0V to +5.5V RS-232 Transceiver
FEATURES
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a +2.7V
power source
■ Minimum 250Kbps data rate under load
■ Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of VCC
Variations
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
C2+ 1
GND 2
C2- 3
V- 4
T1OUT 5
T2OUT 6
T3OUT 7
R1IN 8
R2IN 9
T4OUT 10
R3IN 11
T5OUT 12
SP3249E
24 C1+
23 V+
22 VCC
21 C1-
20 T1IN
19 T2IN
18 T3 IN
17 R1OUT
16 R2OUT
15 T4IN
14 R3OUT
13 T5IN
Now Available in Lead Free Packaging
DESCRIPTION
The SP3249E device is an RS-232 transceiver solution intended for portable or hand-held applications
such as notebook and palmtop computers. The SP3249E uses an internal high-efficiency, charge-pump
power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Exar's
driver architecture allow the SP3249E device to deliver compliant RS-232 performance from a single
power supply ranging from +3.0V to +5.5V. The SP3249E is a 5-driver / 3-receiver device that is ideal
for laptop / notebook computer and PDA applications.
Device
SP3223E
SP3243E
SP3238E
SP3239E
SP3249E
Power
Supplies
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
3
5
5
5
RS-232
Receivers
2
5
3
3
3
External
Components
4 Capacitors
4 Capacitors
4 Capacitors
4 Capacitors
4 Capacitors
Auto
On-Line
Circuitry
YES
YES
YES
NO
NO
SELECTION TABLE
TTL 3-State
# of
Pins
YES
YES
YES
YES
NO
20
28
28
28
24
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3249E_100_013111
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability and cause permanent damage to the
device.
VCC.......................................................-0.3V to +6.0V
V+ (NOTE 1).......................................-0.3V to +7.0V
V- (NOTE 1)........................................+0.3V to -7.0V
V+ + |V-| (NOTE 1)...........................................+13V
ICC (DC VCC or GND current).........................+100mA
Input Voltages
TxIN, .................................................-0.3V to +6.0V
RxIN...................................................................+25V
Output Voltages
TxOUT.............................................................+13.2V
RxOUT........................................-0.3V to (VCC +0.3V)
Short-Circuit Duration
TxOUT....................................................Continuous
Storage Temperature......................-65°C to +150°C
NOTE 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
ELECTRICAL CHARACTERISTICS
VCC = +3.0V to +5.5V, C1 - C4 = 0.1µF (tested at 3.3V +/-5%), C1 - C4 = 0.22µF (tested at 3.3V +/-10%),
C1 = 0.047µF and C2 - C4 = 0.33µF (tested at 5.0V +/-10%), TAMB = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = 25°C
PARAMETER
MIN.
TYP.
DC CHARACTERISTICS
Supply Current
0.3
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold
LOW
HIGH
2.4
Input Leakage Current
+0.01
Output Voltage LOW
Output Voltage HIGH
DRIVER OUTPUTS
VCC -0.6 VCC -0.1
Output Voltage Swing
+5.0
+5.4
MAX.
1.0
0.8
+1.0
0.4
UNITS CONDITIONS
mA no load
VCC = +3.3V or +5.0V, TxIN
V
V
µA TxIN,TAMB = +25°C
V IOUT = 1.6mA
V IOUT = -1.0mA
V All driver outputs loaded with 3KΩ to
GND
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3249E_100_013111
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제조업체: Exar
( exar )
SP3249E transceiver
데이터시트 다운로드 :
[ SP3249E.PDF ]
[ SP3249E 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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