datasheetbank_Logo    Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site
Part Name :

MAX563C/D View Datasheet(PDF) - Maxim Integrated

Part NameMAX563C/D MaximIC
Maxim Integrated MaximIC
Description+3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in Shutdown
MAX563C/D Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
+3.6V
0.1µF
ISHDN
0.1µF
0.1µF
0.1µF
+3.6V
C1+
VCC
V+
C1-
MAX563
C2+ VCC
C2- 400k
V-
0.1µF
T1 & T2
TIN
TOUT
0V +3.6V
DRIVE
R1 & R2
ROUT
EN
SHDN
GND
3k
RIN
+3.6V
5k
Figure 1. Shutdown Current Test Circuit
The inputs of unused drivers may be left unconnected
because they have internal 400kpull-ups to VCC.
Unused inputs may also be connected to GND or VCC,
but VCC provides lower power consumption because of
the internal pull-ups.
EIA/TIA-562 and EIA/TIA-232 Receivers
The MAX563’s receivers convert ±3.7V to ±13.2V
EIA/TIA-562 signal levels into +3V logic levels; they are
rated to receive signals up to ±25V to accommodate
EIA/TIA-232 signals as well. Both receivers invert. Their
inputs are each equipped with an internal 5k(nomi-
nal) terminating resistor connected to ground, and the
input logic thresholds are 0.4V and 2.4V. The positive
logic-low threshold (VIL) ensures the receiver outputs
remain high whenever their inputs are left open.
The receivers are active when EN is low, and have
high-impedance outputs when EN is high.
When SHDN is high, the receivers have hysteresis.
This produces clean output transitions, even with slow-
moving input signals that exhibit moderate amounts of
noise and ringing. When shut down, the receivers have
no hysteresis, and the propagation delay increases.
Shutdown and Enable Control
The SHDN and EN controls are independent. Both
receivers are always active when EN is low. With EN
low and SHDN high, the receivers operate at full speed
+3V
INPUT
OV
OUTPUT
tPLHT
V+
OV
V-
tPHLT
Figure 2. Transmitter Propagation Delay Timing
INPUT
+3V
50%
50%
0V
OUTPUT
50%
tPHLR
tPHLS
VCC
50%
GND
tPLHR
tPLHS
Figure 3. Receiver Propagation Delay Timing
and have hysteresis. When active in shutdown mode
(EN = SHDN = low), the receivers operate at reduced
power and speed, and without hysteresis.
The charge pumps and transmitters operate only when
SHDN is high; they are unaffected by EN. When shut
down (SHDN = low) or unpowered (VCC = 0V), the
transmitter outputs are high impedance if they are
backdriven with voltages not exceeding ±15V. The pull-
up resistors at the driver inputs are disconnected in
shutdown mode to save power. During shutdown, V+ is
pulled down to VCC, and V- rises to GND.
_______________________________________________________________________________________ 5
Direct download click here
 

General Description
The MAX563 is a +3.3V-powered EIA/TIA-562 transceiver with two transmitters and two receivers. Because it implements the EIA/TIA-562 standard, the MAX563 communicates with RS-232 transceivers, yet consumes far less
power; this makes it ideal for battery-powered, hand-held computers. And, the MAX563 guarantees a 116kbps data rate while maintaining ±3.7V EIA/TIA-562 signal levels, which makes it compatible with LapLink™ software.

Features
♦Guaranteed Interoperability with RS-232
♦Operates from a Single +3.0V to +3.6V Supply
♦2 Drivers, 2 Receivers
♦Receivers Active in Shutdown Mode
♦Low-Power Shutdown: 10µA Max
♦Small Package—18-Pin Wide SO
♦Three-State TTL/CMOS Receiver Outputs
♦116kbps Guaranteed Data Rate

Applications
Handiterminals
Battery-Powered Equipment
Bar-Code Readers
Notebook and Palmtop Computers

Share Link : MaximIC
@ 2014 - 2018  [ Home ] [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]