Datasheet

19-0144; Rev. 0; 9/93
_______________General Description
The MAX562 is designed specifically for notebook and
palmtop computers that need to transfer data quickly.
It runs at data rates up to 230kbps, and has a guaran-
teed 4V/µs slew rate. This device meets the new
EIA/TIA-562 standard that guarantees compatibility with
RS-232 interfaces.
The MAX562 has low-power shutdown and keep-awake
modes. In keep-awake mode, the transmitters are dis-
abled but all receivers are active, allowing unidirection-
al communication. In shutdown mode, the entire chip is
disabled and all outputs are in a high-impedance state.
The MAX562 is available in a standard 28-pin SO pack-
age, and in a smaller footprint shrink small-outline
package (SSOP).
________________________Applications
Palmtop, Notebook, and Subnotebook
Computers
Peripherals
Battery-Powered Equipment
____________________________Features
♦ 230kbps Data Rate, LapLink™ Compatible
♦ Operates from a 2.7V to 5.25V Supply
♦ Designed for EIA/TIA-562 and EIA/TIA-232 Applications
♦ Guaranteed 4.0V/µs Slew Rate
♦ 3 Drivers, 5 Receivers
♦ Flow Through Pinout
♦ Low-Power Shutdown and Keep-Awake Modes
♦ Low-Cost, Surface-Mount External Capacitors
______________Ordering Information
* Contact factory for dice specifications.
MAX562
Complete 230kbps, 2.7V to 5.25V
Serial Interface for Notebook Computers
________________________________________________________________ Maxim Integrated Products 1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
CC
GND
V-
C2+
C2-
R1
IN
SHDN
R2
IN
R3
IN
R4
IN
R5
IN
T1
OUT
T2
OUT
T3
OUT
EN
T3
IN
T2
IN
T1
IN
R5
OUT
R4
OUT
R3
OUT
R2
OUT
R1
OUT
C1A-
C1B-
C1B+
C1A+
V+
MAX562
SO/SSOP
TOP VIEW
__________________Pin Configuration
T1
T2
T3
R1
R2
R3
R4
R5
5k
5k
5k
5k
5k
GND
19
SHDN
R5
IN
R4
IN
R3
IN
R2
IN
R1
IN
T3
OUT
T2
OUT
T1
OUT
R5
OUT
R4
OUT
R3
OUT
R2
OUT
R1
OUT
EN
T3
IN
T2
IN
T1
IN
VOLTAGE
DOUBLER/TRIPLER
VOLTAGE
INVERTER
20
21
22
23
16
17
18
26
28

453
2
1
25
12
24
11
13
6
7
8
9
10
14
27
15
C2-
C2+
V-
C1A C1B
C1A+ C1A- C1B+ C1B-
V
CC
V+
C3 0.68µF
C4 0.33µF
0.33µF
+2.7V TO 
+5.25V
INPUT
0.33µF
0.33µF 0.33µF
CMOS
INPUTS
CMOS
OUTPUTS
EIA/TIA
-562
INPUTS
EIA/TIA
-562
OUTPUTS
C2
MAX562
__________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.
PART TEMP. RANGE PIN-PACKAGE
MAX562CWI 0°C to +70°C 28 SO
MAX562CAI 0°C to +70°C 28 SSOP
MAX562C/D 0°C to +70°C Dice*
MAX562EWI -40°C to +85°C 28 SO
MAX562EAI -40°C to +85°C 28 SSOP
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