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MAX3228E-MAX3229E Datasheet(PDF) 5 Page - Maxim Integrated Products

Part No. MAX3228E-MAX3229E
Description  ±15kV ESD-Protected 2.5V to 5.5V RS-232 Transceivers in UCSP
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX3228E-MAX3229E Datasheet(HTML) 5 Page - Maxim Integrated Products

 
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±15kV ESD-Protected +2.5V to +5.5V
RS-232 Transceivers in UCSP
_______________________________________________________________________________________
5
PIN
MAX3228E
MAX3229E
NAME
FUNCTION
A1
A1
VCC
+2.5V to +5.5V Supply Voltage
A2
A2
C2+
Positive Terminal of Inverting Charge-Pump Capacitor
A3
A3
C2-
Negative Terminal of Inverting Charge-Pump Capacitor
A4
A4
V-
-5.5V/-4.0V Generated by Charge Pump
A5
A5
VL
Logic-Level Input for Receiver Outputs and Transmitter Inputs. Connect VL to the
system logic supply voltage or VCC if no logic supply is required.
A6, B6
A6
T_IN
Transmitter Input(s)
B1
B1
V+
+5.5V/+4.0V Generated by Charge Pump. If charge pump is generating +4.0V, the part
has switched from RS-232 compliant to RS-232 compatible mode.
B2, B3, B4,
C2, C3, C4,
D2, D3, D4,
D5
B2, B3, B4,
C2, C3, C4,
D2, D3, D4,
D5
N.C.
No Connection. These locations are not populated with solder bumps.
B5
B5
FORCEON
FORCEON Input, Active-High. Drive FORCEON high to override automatic circuitry,
keeping transmitters and charge pumps on. Pulls itself high internally if not connected.
B6, D6,
E4, E6
N.C.
No Connection. These locations are populated with solder bumps, but are electrically
isolated.
C1
C1
C1+
Positive Terminal of Positive Regulated Charge-Pump Capacitor
Pin Description
Typical Operating Characteristics (continued)
(VCC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k
Ω and CL, TA = +25°C, unless otherwise noted.)
0
6
4
2
8
10
12
14
16
18
20
2.5
3.5
3.0
4.0
4.5
5.0
5.5
OPERATING SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX3229E)
SUPPLY VOLTAGE (V)
-8
-4
-6
2
0
-2
8
6
4
10
2.5
3.5
3.0
4.0
4.5
5.0
5.5
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (VCC RISING)
SUPPLY VOLTAGE (V)
VOH
VOL
-8
-4
-6
2
0
-2
8
6
4
10
2.5
3.5
3.0
4.0
4.5
5.0
5.5
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (VCC FALLING)
SUPPLY VOLTAGE (V)
VOH
VOL


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