MAX563CPN-MAX563CWN Fast Delivery |IC PHOENIX CO.,LIMITED

MAX563CWN ,+3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in ShutdownApplicationsMAX563CWN 0°C to +70°C 18 Wide SOHanditerminalsMAX563C/D 0°C to +70°C Dice *Battery-Pow ..
MAX5661GCB+ ,Single 16-Bit DAC with Current and Voltage Outputs for Industrial Analog Output ModulesApplications+Denotes a lead(Pb)-free/RoHS-compliant package.Industrial Analog Output ModulesIndustr ..
MAX5704ATB+T ,Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and SPI InterfaceApplicationsCS8-/10-/CODE DAC12-BIT Programmable Voltage and Current Sources SCLK LATCHREGISTERDACO ..
MAX5712EUT#TG16 ,12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23ApplicationsPIN- TOPAutomatic TuningPART TEMP RANGEPACKAGE MARKGain and Offset AdjustmentPower Ampl ..
MAX5721AUA ,10-Bit, Low-Power, Dual, Voltage-Output DAC with Serial InterfaceELECTRICAL CHARACTERISTICS(V = +2.7V to +5.5V, GND = 0, V = V , R = 5kΩ , C = 200pF, T = T to T , u ..
MAX5721AUA+ ,10-Bit, Low-Power, Dual, Voltage-Output DAC with Serial InterfaceApplications Ordering InformationAutomatic TuningPART TEMP RANGE PIN-PACKAGEGain and Offset Adjustm ..
MAZ8027-H ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperaturecoefficient ofZener voltage Rev ..
MAZ8027-L ,Silicon planar typeElectrical Characteristics T = 25°CaParameter Symbol Conditions Min Typ Max UnitForward voltage V ..
MAZ8030-H ,Silicon planar typeelectrical characteristicsZ Zwithin part numbersReverse current I V ··············· Specified value ..
MAZ8030-L ,Silicon planar typeZener DiodesMAZ8000 SeriesSilicon planar typeUnit : mmFor stabilization of power supplyKA
MAZ8033-H ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperaturecoefficient ofZener voltage Rev ..
MAZ8033-L ,Silicon planar typeelectrical characteristicsZ Zwithin part numbersReverse current I V ··············· Specified value ..

MAX563CPN-MAX563CWN
+3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in Shutdown
_______________General Description
The MAX563 is a +3.3V-powered EIA/TIA-562 transceiver
with two transmitters and two receivers. Because it imple-
ments the EIA/TIA-562 standard, the MAX563 communi-
cates 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.
An on-board charge pump converts the +3.3V supply to
the ±6.6V needed to produce the EIA/TIA-562 output volt-
age levels. Four 0.1µF charge-pump capacitors and a
bypass capacitor of similar size are the only external com-
ponents required.
When the MAX563’s charge pumps and transmitters are
shut down to save power, the receivers remain active to
continuously monitor signals from external devices (for
example, ring indicator from modems). The two receivers’
outputs can be enabled and disabled independently of the
shutdown function to allow two ports—generally of different
types—to be wire-OR connected at the UART.
________________________Applications
Handiterminals
Battery-Powered Equipment
Bar-Code Readers
Notebook and Palmtop Computers
____________________________FeaturesGuaranteed Interoperability with RS-232Operates from a Single +3.0V to +3.6V Supply2 Drivers, 2 ReceiversReceivers Active in Shutdown ModeLow-Power Shutdown: 10µA MaxSmall Package—18-Pin Wide SOThree-State TTL/CMOS Receiver Outputs116kbps Guaranteed Data Rate
______________Ordering Information
MAX563
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
__________________Pin Configuration
__________Typical Operating Circuit
19-0198; Rev 0; 10/93
™ LapLink is a registered trademark of Traveling Software, Inc.
* Dice are specified at TA = +25°C.
MAX563
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
ABSOLUTE MAXIMUM RATINGS
Power Supply Ranges
Supply Voltage (VCC)...........................................-0.3V to +6V
Input Voltages
TIN.........................................................-0.3V to (VCC-0.3V)
RIN...............................................................................±25V
TOUT (Note 1)...................................................................±15V
Output Voltages
TOUT.............................................................................±15V
ROUT....................................................-0.3V to (VCC+0.3V)
Driver/Receiver Output Short Circuit to GND.........Continuous
Continuous Power Dissipation (TA= +70°C)
Plastic DIP....................................................................889mW
Wide SO.......................................................................762mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS
(VCC= 3.0V to 3.6V, C1-C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:Input voltage measured with TOUTin high-impedance state. SHDNor VCC= 0V.
MAX563
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3.0V to 3.6V, C1-C4 = 0.1µF, TA= TMINto TMAX, unless otherwise noted.)
Note 2:Minimum slew rate is specified with CL= 1000pF for data rates above 20kbps, corresponding with EIA/TIA-562.
MAX563
_______________Detailed Description
The MAX563 consists of three sections: charge-pump
voltage converters, transmitters (drivers), and
receivers. Both the transmitters and the receivers are
inverting.
+3V to ±6V, Dual Charge-Pump Voltage
Converter
Two charge pumps either invert or double the incoming
VCCto generate the voltages required by the transmit-
ters. The first charge pump uses capacitor C1 to
double VCC; the resulting voltage is stored on the V+
reservoir capacitor. The second charge pump uses
capacitor C2 to invert V+; this negative voltage is
stored on the V- capacitor.
When SHDNis low, the charge pumps are turned off,
V+ is pulled down to VCCby a 1kΩresistor, and V-
rises to GND.
It is possible to draw some power from the V+ and V-
pins for external use. However, doing so diminishes the
charge-pump output voltages and reduces noise mar-
gins, so it is not recommended.
EIA/TIA-562 Transmitters
The MAX563’s drivers are inverting level translators that
convert +3V logic inputs to EIA/TIA-562 voltage levels.
With a VCC supply of only 3.0V, the driver outputs
deliver the EIA/TIA-562 ±3.7V minimum specification
under worst-case conditions—when both transmitters
are loaded with 3kΩreceivers (either EIA/TIA-232 or
EIA/TIA-562).
The transmitters are fast: the guaranteed data rate with
standard loads is 116kbps, which is the highest rate
commonly used by PC-to-PC communication software,
such as LapLink. The highest practical data rate may
be reduced if the other communicating device (RS-562
or RS-232) is not as fast, or if the cables present an
excessive capacitive load (>1000pF). Each transmitter
is designed to drive a single receiver; transmitters can
be paralleled to drive multiple receivers.
When SHDNis low, the driver outputs are turned off.
Their output leakage currents are less than 10µA when
pulled to GND or when driven to ±15V. This enables
two transmitters to be connected to the same line, pro-
vided that one of them is always disabled by taking
SHDNlow.
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
______________________________________________________________Pin Description
The inputs of unused drivers may be left unconnected
because they have internal 400kΩpull-ups to VCC.
Unused inputs may also be connected to GND or VCC,
but VCCprovides 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 5kΩ(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 ENis low, and have
high-impedance outputs when ENis high.
When SHDNis 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 SHDNand ENcontrols are independent. Both
receivers are always active when ENis low. With EN
low and SHDNhigh, the receivers operate at full speed
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
SHDNis 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.
MAX563
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
Figure 1. Shutdown Current Test Circuit
Figure 2. Transmitter Propagation Delay Timing
__________Applications Information
Charge-Pump Capacitor Selection
Normally, 0.1µF capacitors can be used for all loca-
tions. To reduce output ripple, increase the values of
the V+ and V- capacitors. If your capacitors have a
very wide tolerance, consider using a nominal value a
little larger than 0.1µF to ensure that the actual capaci-
tance does not fall below about 80nF. For circuits
designed to operate over a wide range of tempera-
tures, consider using slightly larger capacitors to com-
pensate for any loss of capacitance at temperature
extremes. No advantage is gained by using values
larger than 10µF.
Power-Supply Decoupling
Use a capacitor with the same value as the charge-
pump capacitors.
MAX563
+3.3V-Powered, EIA/TIA-562 Dual Transceiver
with Receivers Active in Shutdown
Figure 4. Receiver Output Enable and Disable Timing
Figure 5. Transmitter Output Disable Timing

Partno	Mfg	Dc	Qty	Available	Descript
MAX563CPN	MAX	N/a	4	avai	+3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in Shutdown
MAX563CWN	MAXIM	N/a	3000	avai	+3.3V-Powered, EIA/TIA-562 Dual Transceiver with Receivers Active in Shutdown