參數(shù)資料
型號(hào): MAX3228-MAX3229
廠商: Maxim Integrated Products, Inc.
英文描述: +2.5V to +5.5V RS-232 Transceivers in UCSP
中文描述: 2.5V至5.5V的RS - 232收發(fā)器的UCSP封裝
文件頁(yè)數(shù): 5/14頁(yè)
文件大?。?/td> 238K
代理商: MAX3228-MAX3229
M
+2.5V to +5.5V RS-232 Transceivers
in UCSP
_______________________________________________________________________________________
5
PIN
MAX3228
A1
A2
A3
A4
MAX3229
A1
A2
A3
A4
NAME
FUNCTION
V
CC
C2+
C2-
V-
+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
A5
A5
V
L
Logic-Level Input for Receiver Outputs and Transmitter Inputs. Connect V
L
to the
system logic supply voltage or V
CC
if no logic supply is required.
Transmitter Input(s)
A6, B6
A6
T_IN
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)
(V
CC
= +3.3V, 250kbps data rate, 0.1μF capacitors, all transmitters loaded with 3k
and C
L
, T
A
= +25
°
C, unless otherwise noted.)
0
6
4
2
8
10
12
14
16
18
20
2.5
3.5
SUPPLY VOLTAGE (V)
3.0
4.0
4.5
5.0
5.5
OPERATING SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX3229)
M
O
-8
-4
-6
2
0
-2
8
6
4
10
2.5
3.5
SUPPLY VOLTAGE (V)
3.0
4.0
4.5
5.0
5.5
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (V
CC
RISING)
M
T
V
OH
V
OL
-8
-4
-6
2
0
-2
8
6
4
10
2.5
3.5
SUPPLY VOLTAGE (V)
3.0
4.0
4.5
5.0
5.5
TRANSMITTER OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE (V
CC
FALLING)
M
T
V
OH
V
OL
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