MAX3228EBV-T Maxim Integrated, MAX3228EBV-T Datasheet - Page 5

• Manufacturer Part Number: MAX3228EBV-T
• Description: RS-232 Interface IC 2.5-5.5V Transceiver
• Manufacturer: Maxim Integrated
• Series: MAX3228, MAX3229r

Specifications of MAX3228EBV-T

• Data Rate: 250 Kbps
• Operating Supply Voltage: 2.5 V to 5.5 V
• Supply Current: 10 uA
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: UCSP-20 6 x 5
• Number Of Drivers: 2
• Number Of Receivers: 2

(V
C2, C3, C4,
D2, D3, D4,
B2, B3, B4,
MAX3228
CC
A6, B6
20
18
16
14
12
10
8
6
4
2
0
D5
C1
= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and C
A1
A2
A3
A4
A5
B1
B5
—
2.5
vs. SUPPLY VOLTAGE (MAX3229)
OPERATING SUPPLY CURRENT
3.0
PIN
C2, C3, C4,
D2, D3, D4,
B2, B3, B4,
SUPPLY VOLTAGE (V)
MAX3229
3.5
B6, D6,
E4, E6
D5
C1
A1
A2
A3
A4
A5
A6
B1
B5
_______________________________________________________________________________________
4.0
4.5
FORCEON
NAME
+2.5V to +5.5V RS-232 Transceivers
5.0
T_IN
N.C.
N.C.
V
C2+
C1+
C2-
V+
V
V-
CC
L
5.5
+2.5V to +5.5V Supply Voltage
Positive Terminal of Inverting Charge-Pump Capacitor
Negative Terminal of Inverting Charge-Pump Capacitor
-5.5V/-4.0V Generated by Charge Pump
Logic-Level Input for Receiver Outputs and Transmitter Inputs. Connect V
system logic supply voltage or V
Transmitter Input(s)
+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.
No Connection. These locations are not populated with solder bumps.
FORCEON Input, Active-High. Drive FORCEON high to override automatic circuitry,
keeping transmitters and charge pumps on. Pulls itself high internally if not connected.
No Connection. These locations are populated with solder bumps, but are electrically
isolated.
Positive Terminal of Positive Regulated Charge-Pump Capacitor
10
-2
-4
-6
-8
Typical Operating Characteristics (continued)
8
6
4
2
0
2.5
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (V
3.0
SUPPLY VOLTAGE (V)
3.5
V
OL
4.0
V
OH
CC
4.5
RISING)
CC
5.0
if no logic supply is required.
FUNCTION
5.5
L
, T
10
-2
-4
-6
-8
A
8
6
4
2
0
2.5
= +25°C, unless otherwise noted.)
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (V
3.0
Pin Description
SUPPLY VOLTAGE (V)
3.5
in UCSP
V
OL
4.0
V
OH
CC
4.5
L
FALLING)
to the
5.0
5.5
5