datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

MAX221EUE View Datasheet(PDF) - Maxim Integrated

Part Name
Description
View to exact match
MAX221EUE Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
+5V, 1µA, Single RS-232 Transceiver
with AutoShutdown
Typical Operating Characteristics
(VCC = +5V, 250kbps data rate, 0.1µF capacitors, transmitter loaded with 3kand CL, TA = +25°C, unless otherwise noted.)
TRANSMITTER OUTPUT
VOLTAGE vs. LOAD CAPACITANCE
10
8
6
20kbps
4
120kbps
2
250kbps
0
-2
250kbps
-4
120kbps
20kbps
-6
-8
-10
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
SLEW RATE vs.
LOAD CAPACITANCE
50
40
+SLEW
30
-SLEW
20
10
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
OPERATING SUPPLY
CURRENT vs. LOAD CAPACITANCE
50
40
250kbps
30
20
10
120kbps
20kbps
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
Pin Description
PIN
NAME
FUNCTION
1
EN
Receiver Enable Control. Drive low for normal operation. Drive high to force the receiver output
(ROUT) into a high-impedance state.
2
C1+
Positive Terminal of the Voltage Doubler Charge-Pump Capacitor
3
V+
Positive Voltage Generated by the Charge Pump
4
C1-
Negative Terminal of the Voltage Doubler Charge-Pump Capacitor
5
C2+
Positive Terminal of the Inverting Charge-Pump Capacitor
6
C2-
Negative Terminal of the Inverting Charge-Pump Capacitor
7
V-
Negative Voltage Generated by the Charge Pump
8
RIN
RS-232 Receiver Input
9
ROUT
TTL/CMOS Receiver Output
10
INVALID
Output of the Invalid Signal Detector. INVALID is pulled low if no valid RS-232 level is present on
the receiver input.
11
TIN
TTL/CMOS Transmitter Input
12
FORCEON
Drive high to override automatic circuitry, keeping transmitter and charge pump on.
FORCEOFF must be high (Table 1).
13
TOUT
RS-232 Transmitter Output
14
GND
Ground
15
VCC
+4.5V to +5.5V Supply Voltage
16
FORCEOFF
Force-Off Input, active low. Drive low to shut down transmitter, receiver, and on-board charge
pump. This overrides all automatic circuitry and FORCEON (Table 1).
4 _______________________________________________________________________________________
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]