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ICL3244CB

更新时间： 2024-09-17 22:36:07
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英特矽尔 - INTERSIL /
页数 文件大小 规格书
13页 144K
描述
1Microamp, +3V to +5.5V, 250kbps, RS-232 Transceiver with Enhanced Automatic Powerdown

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ICL3244CB 数据手册

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ICL3244  
TM  
Data Sheet  
June 2000  
File Number 4876  
1Microamp, +3V to +5.5V, 250kbps,  
RS-232 Transceiver with Enhanced  
Automatic Powerdown  
Features  
• Manual and Enhanced Automatic Powerdown Features  
• Drop in Replacement for MAX3244  
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V  
• Latch-Up Free  
The Intersil ICL32XX devices are 3.0V to 5.5V powered  
RS-232 transmitters/receivers which meet ElA/TIA-232 and  
V.28/V.24 specifications, even at V  
= 3.0V. Targeted  
• On-Chip Voltage Converters Require Only Four External  
CC  
0.1µF Capacitors  
applications are PDAs, Palmtops, and notebook and laptop  
computers where the low operational, and even lower  
standby, power consumption is critical. Efficient on-chip  
charge pumps, coupled with manual and enhanced  
automatic powerdown functions, reduce the standby supply  
current to a 1µA trickle. Small footprint packaging, and the  
use of small, low value capacitors ensure board space  
savings as well. Data rates greater than 250kbps are  
guaranteed at worst case load conditions. This family is fully  
compatible with 3.3V only systems, mixed 3.3V and 5.0V  
systems, and 5.0V only systems.  
• Guaranteed Mouse Driveability  
• Receiver Hysteresis For Improved Noise Immunity  
• Guaranteed Minimum Data Rate . . . . . . . . . . . . 250kbps  
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/µs  
• Wide Power Supply Range. . . . . . . . Single +3V to +5.5V  
• Low Supply Current in Powerdown State . . . . . . . . . . 1µA  
Applications  
• Any System Requiring RS-232 Communication Ports  
- Battery Powered, Hand-Held, and Portable Equipment  
- Laptop Computers, Notebooks, Palmtops  
- Modems, Printers and other Peripherals  
- Cellular/Mobile Phones  
The ICL3244 is a 3 driver, 5 receiver device that provides a  
complete serial port suitable for laptop or notebook  
computers. It also includes a noninverting always-active  
receiver for “wake-up” capability.  
• Related Literature  
This device, features an enhanced automatic powerdown  
function which powers down the on-chip power-supply and  
driver circuits. This occurs when all receiver and transmitter  
inputs detect no signal transitions for a period of 30s. The  
ICL3244 powers back up, automatically, whenever it senses  
a transition on any transmitter or receiver input.  
- Application Note AN9863, “3V to +5.5V, 250k-1Mbps,  
RS-232 Transmitters/Receivers”  
Pinout  
ICL3244 (SOIC, SSOP)  
TOP VIEW  
Table 1 summarizes the features of the device represented  
by this data sheet, while Application Note AN9863  
summarizes the features of each device comprising the  
ICL3244 3V family.  
C2+  
C2-  
V-  
1
2
28 C1+  
27 V+  
3
26 V  
CC  
25 GND  
R1  
R2  
R3  
R4  
R5  
4
IN  
IN  
IN  
IN  
IN  
Ordering Information  
5
24 C1-  
6
23 FORCEON  
22 FORCEOFF  
21 INVALID  
TEMP.  
o
7
PART NO.  
ICL3244CA  
ICL3244CB  
RANGE ( C)  
0 to 70  
PACKAGE  
28 Ld SSOP  
28 Ld SOIC  
PKG. NO.  
M28.209  
M28.3  
8
T1  
9
20  
R2  
OUT  
OUT  
OUT  
OUTB  
OUT  
OUT  
OUT  
OUT  
OUT  
0 to 70  
10  
11  
12  
13  
14  
19 R1  
18 R2  
17 R3  
16 R4  
15 R5  
T2  
T3  
NOTE: Most surface mount devices are available on tape and reel;  
add “-T” to suffix.  
T3  
T2  
T1  
IN  
IN  
IN  
TABLE 1. SUMMARY OF FEATURES  
ENHANCED  
AUTOMATIC  
POWERDOWN  
FUNCTION?  
NO. OF  
MONITOR Rx.  
DATA  
RATE  
(kbps)  
MANUAL  
POWER-  
DOWN?  
PART  
NO. OF NO.OF  
Rx. ENABLE  
FUNCTION?  
READY  
OUTPUT?  
NUMBER  
Tx.  
Rx.  
(R  
)
OUTB  
ICL3244  
3
5
1
250  
No  
No  
Yes  
Yes  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000  
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