參數(shù)資料
型號(hào)： SP3249EEY-L/TR
廠商： Exar Corporation
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 0K
描述： IC TXRX RS232 INTELLIGNT 24TSSOP
產(chǎn)品變化通告： Packaging Change 15/Jul/2010
標(biāo)準(zhǔn)包裝： 1,500
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 5/3
規(guī)程： RS232
電源電壓： 3 V ~ 5.5 V
安裝類型： 表面貼裝
封裝/外殼： 24-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 24-TSSOP
包裝： 帶卷 (TR)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com
SP3249E_100_013111
1
SP3249E
Intelligent +3.0V to +5.5V RS-232 Transceiver
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 0.1F 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.
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 V
CC
Variations
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
DESCRIPTION
SELECTION TABLE
Now Available in Lead Free Packaging
T4IN
1
2
3
4
21
22
23
24
5
6
7
20
19
18
C2-
V-
R1IN
R2IN
IN
C2+
C1-
GND
VCC
V+
T1IN
8
9
10
11
14
15
16
17
12
13
T OUT
T2OUT
T3OUT
T3IN
T2IN
T5IN
R3OUT
R2OUT
R1OUT
SP3249E
C1+
T4OUT
T5OUT
1
3
R
Device
Power
Supplies
RS-232
Drivers
RS-232
Receivers
External
Components
Auto
On-Line
Circuitry
TTL 3-State
# of
Pins
SP3223E
+3.0V to +5.5V
2
4 Capacitors
YES
20
SP3243E
+3.0V to +5.5V
3
5
4 Capacitors
YES
28
SP3238E
+3.0V to +5.5V
5
3
4 Capacitors
YES
28
SP3239E
+3.0V to +5.5V
5
3
4 Capacitors
NO
YES
28
SP3249E
+3.0V to +5.5V
5
3
4 Capacitors
NO
24
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