MAX3245EEAI Maxim Integrated Products, MAX3245EEAI Datasheet - Page 8

• Manufacturer Part Number: MAX3245EEAI
• Description: IC TXRX RS232 1MBPS SHTDN 28SSOP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX3245EEAI

• Number Of Drivers/receivers: 3/5
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The MAX3224E–MAX3227E/MAX3244E/MAX3245E’s
internal power supply consists of a regulated dual
charge pump that provides output voltages of +5.5V
(doubling charge pump) and -5.5V (inverting charge
pump), over the +3.0V to +5.5V range. The charge
pump operates in discontinuous mode: if the output
voltages are less than 5.5V, the charge pump is
±15kV ESD-Protected, 1µA, 1Mbps 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
______________________________________________________________ Pin Description
8
_______________Detailed Description
10, 11
TQFN
EP
_______________________________________________________________________________________
12
16
17
18
—
—
MAX3224E
MAX3225E
Dual Charge-Pump Voltage Converter
TSSOP
SSOP/
12, 13
DIP/
14
18
19
20
—
—
—
TQFN
EP
11
12
13
—
—
8
9
MAX3226E
MAX3227E
TSSOP
SSOP/
11
12
14
15
16
—
—
—
PIN
DIP/ SSOP/ TSSOP
MAX3244E
MAX3245E
12-14
23
25
26
22
20
—
—
enabled; if the output voltages exceed 5.5V, the
charge-pump is disabled. Each charge pump requires
a flying capacitor (C1, C2) and a reservoir capacitor
(C3, C4) to generate the V+ and V- supplies.
The READY output (MAX3224E–MAX3227E) is low
when the charge pumps are disabled in shutdown
mode. The READY signal asserts high when V- goes
below -4V.
MAX3245E
18, 22, 28,
11, 12, 13
6, 10, 14,
32, 36
TQFN
EP
25
27
29
24
21
FORCEOFF
FORCEON
R2OUTB
NAME
T_IN
GND
N.C.
V
EP
CC
TTL/CMOS Transmitter
Inputs
Force-On Input, Active High.
Drive high to override
AutoShutdown Plus, keeping
transmitters and receivers
on (FORCEOFF must be
high) (Table 1).
Ground
+3.0V to +5.5V Single
Supply Voltage
Force-Off Input, Active Low.
Drive low to shut down
transmitters, receivers
(except R2OUTB), and
charge pump. This
overrides AutoShutdown
Plus and FORCEON (Table
1).
TTL/CMOS Noninverting
Complementary Receiver
Outputs. Always active.
No Connection. Not
internally connected.
Exposed Paddle. Solder the
exposed paddle to the
ground plane or leave
unconnected.
FUNCTION