Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

MAX3238E Datasheet(PDF) 5 Page - Maxim Integrated Products

Part No. MAX3238E
Description  3.0V to 5.5V, 10nA, 250kbps RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins
Download  14 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
Logo 

MAX3238E Datasheet(HTML) 5 Page - Maxim Integrated Products

 
Zoom Inzoom in Zoom Outzoom out
 5 / 14 page
background image
+3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers
with ±15kV ESD-Protected I/O and Logic Pins
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(VCC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k
Ω, TA = +25°C, unless otherwise noted.)
______________________________________________________________Pin Description
Output of the Valid Signal Detector. A logic 1 indicates if a valid RS-232 level is present on
receiver inputs.
INVALID
15
Noninverting Complementary Receiver Output. Always active.
R1OUTB
16
TTL/CMOS Transmitter Inputs (T5IN–T1IN). This pin has an active positive feedback resis-
tor. Once driven to a valid logic level, the pin retains that level if left unconnected until
power is cycled.
T_IN
17, 19, 22, 23, 24
TTL/CMOS Receiver Outputs (R3OUT–R1OUT)
R_OUT
18, 20, 21
Negative Terminal of Voltage-Doubler Charge-Pump Capacitor
C1-
25
RS-232 Transmitter Outputs (T1OUT–T5OUT)
T_OUT
5, 6, 7, 10, 12
RS-232 Receiver Inputs (R1IN–R3IN)
R_IN
8, 9, 11
Force-On Input. Drive high to override AutoShutdown Plus, keeping transmitters and
receivers on (FORCEOFF must be high) (Table 1). This pin has an active positive feedback
resistor. Once driven to a valid logic level, the pin retains that level if left unconnected until
power is cycled.
FORCEON
13
Force-Off Input. Drive low to shut down transmitters, receivers (except R1OUTB), and on-
board supply. This overrides AutoShutdown Plus and FORCEON (Table 1). This pin has an
active positive feedback resistor. Once driven to a valid logic level, the pin retains that
level if left unconnected until power is cycled.
FORCEOFF
14
-5.5V Generated by the Charge Pump
V-
4
Negative Terminal of Inverting Charge-Pump Capacitor
C2-
3
PIN
Ground
GND
2
Positive Terminal of Inverting Charge-Pump Capacitor
C2+
1
FUNCTION
NAME
26
VCC
+3.0V to +5.5V Supply Voltage
27
V+
+5.5V Generated by the Charge Pump
28
C1+
Positive Terminal of Voltage-Doubler Charge-Pump Capacitor
-6
-2
-4
2
0
4
6
-3
-5
1
-1
3
5
2.0
3.0
3.5
2.5
4.0
4.5
5.0
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
VOUT-
VOUT+
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
Ω +1000pF
0
20
10
30
40
50
2.0
3.0
3.5
2.5
4.0
4.5
5.0
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
Ω +1000pF


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn