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What is ZT213F?

This electronic component, produced by the manufacturer "Zywyn", performs the same function as "(ZT207F - ZT213F) Low Power 5V 1000Kbps RS232 Transceivers".


ZT213F Datasheet PDF - Zywyn

Part Number ZT213F
Description (ZT207F - ZT213F) Low Power 5V 1000Kbps RS232 Transceivers
Manufacturers Zywyn 
Logo Zywyn Logo 


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ZT230F Low Power 5V 1000kbps RS232 Transceivers
Zywyn Corporation
ZT230F
Zywyn
ZT207F, ZT208F
ZT211F, ZT213F
Low Power 5V 1000kbps RS232 Transceivers
Features
• Meets EIA/TIA-232F and CCITT V.28/V.24
specications for VCC at +5V ±10%
• Low Quiescent Current – 3mA typ., 6mA max.
• Low Shutdown Current (where applicable) -
1μA typical, 10μA max.
• Guaranteed Standard Data Rate 1000kbps
www.DataSheetCP4Uro.ocnopvmreierttearrsy
Switch-Capacitor
(patent pending)
Regulated
Voltage
• Wake Up Feature in Shutdown Mode
• Tri-State Receiver Outputs
• Latch-up Free
• ESD Protection for RS-232 I/O's
±15kV Human Body Model (HBM)
• Drop-in Replacements for SP207EH, SP208EH,
SP211EH, SP213EH
• Standard Data Rate at 250kbps Available on
ZT230E Series
General Description
The ZT230F series devices are 5V powered EIA/TIA-232
and V.28/V.24 communication interfaces with low power
requirements. They consist of the combinations of ve line
drivers, ve line receivers and the proprietary switch-capaci-
tor regulated voltage converters. The ZT211F and ZT213F
feature a low power shutdown mode which draws as little
current as 1μA typical with receiver outputs tri-stated and
wake-up function. These devices operate from a single 5V
power supply at the guaranteed data rate of 1000k bits/sec
with enhanced electrostatic discharge (ESD) protection in all
RS232 I/O pins exceeding ±15kV HBM.
Applications
• Battery-Powered Applications
• Notebooks, Subnotebooks, and Palmtops
• Industrial and Embedded PCs
• Data Cables for Cell Phones and PDAs
• Terminal Adapters and POS terminals
• Peripherals interface
• Routers and HUBs
Now Available in Green Package Option
Product Selection Guide And Cross Reference
Part
Number
ZT207F
ZT208F
ZT211F
ZT213F
# 0f
RS232
Tx
5
4
4
4
# of
RS232
Rx
3
4
5
5
# of Rx
active in
SD
# of
0.1µF
caps
Shut
Down
Wake
Up
TTL
Tri-
State
0 4 No No No
0 4 No No No
0 4 Yes No Yes
2 4 Yes Yes Yes
Data
Rate
(kbps)
1000
1000
1000
1000
ESD HBM
on
RS232 I/O
± 15kV
± 15kV
± 15kV
± 15kV
Pin-to-Pin
Cross
SIPEX
SP207EH
SP208EH
SP211EH
SP213EH
Pin-to-Pin
Cross
MAXIM
n/a
n/a
n/a
n/a
Zywyn
Specications subject to change without notice
Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • E1mail [email protected] • www.zywyn.com
May 2006
rev. 1.6

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ZT213F equivalent
Zywyn Corporation
ZT230F
Circuit Description
Proprietary Switch-Capacitor Regulated Voltage
Converter
Different from other suppliers, Zywyn uses a patent pending
switch-capacitor voltage-controlled source and sink current
generators design to provide powerful bipolar voltages to
maintain compliant EIA/RS232 levels regardless of power sup-
ply uctuations. The design consists of an internal regulated
oscillator, a two phase clock cycling, regulated complementary
MOS switches, fast switching diode and switch capacitors.
The switch capacitor bi-directional current generators operate
with Zywyn’s proprietary smartly regulated complementary
MOS switches and fast switching diode from its proprietary
high voltage process technology. The efciency of these bi-
www.DataShedeirte4Uc.tcioonmal current generators is well over 70%. The switching
frequency is generated by an internal oscillator and regulated
by the current loads. The switch capacitor pump design deliv-
ers higher negative bucked voltage than the positive boosted
voltage to achieve a balanced voltage controlled source and
sink current generators resulting a balanced bipolar voltage
supplies to the chip.
With its unique proprietary design technique, Zywyn’s inter-
face product series provide a better power efcient, stable
and compliant EIA/RS232 levels with superior low power
consumption.
Controlled Enable and Power-Down
The ZT211F and ZT213F both feature an enable input,
which allows the receiver outputs to be either tri–stated or
enabled. This can be especially useful when the receiver is
tied directly to a microprocessor data bus. For the ZT211F,
enable is active low, in which a logic LOW applied to the EN
pin will enable the receiver outputs. For the ZT213F, enable
is active high in which a logic HIGH applied to the EN pin will
enable the receiver outputs.
ZT211F and ZT213F have a low-power shutdown mode con-
trolled by the SD pin. During shutdown the driver output and
the switch-capacitor regulated voltage converter are disabled
with the supply current falls to less than 1μA.
ZT213F includes a wakeup function (see Table 1) that enables
two receivers during a shutdown state. With only the receivers
active during the shutdown state, the devices draw 5-10μA of
supply current. A typical application is when a RS232 cable
is connected or when the peripheral is enabled such as a
modem, the devices will automatically become active again.
The ring indicator signal from the modem could be passed
through an active receiver in the ZT213F that is itself in the
shutdown mode. The ring indicator signal would propagate
through the ZT213F to the power management circuitry of the
computer to power up the microprocessor and the ZT213F
drivers. After the supply voltage to the ZT213F reaches
+5.0V, the SD pin can be disabled, taking the ZT213F out
of the shutdown mode. All receivers that are active during
shutdown maintain 500mV (typ.) of hysteresis.
ESD Immunity
Electro-Static Discharge (ESD) is an important factor when
implementing a serial port into a system. In some applica-
tions, it is crucial that the ESD protection for the system must
meet a certain tolerance level. Since RS232 transceiver
devices are exposed to the outside world, there are many
environmental factors that can effect the serial port and
even subject it to transients that could potentially damage
the transceiver itself.
The RS232 transceiver is usually routed from the serial port
connector to the transceiver IC through the metal trace on
the printed circuit board. This trace will have some small
amount of resistance that will add some protection in terms
of limiting transient current to the IC. However for added
voltage protection, transient voltage suppressors (TVS) or
transzorbs, which are back-to-back diode arrays clamp, are
usually necessary to protect the serial port circuity.
To further reduce cost within their system, more engineers
are requiring higher ESD tolerances from the transceiver
ICs themselves without having to add costly TVS circuitry.
Zywyn's RS232 transceivers includes built-in transient voltage
suppression where external ESD circuitry is not necessary to
meet the MIL-STD-883, Method 3015, Human Body Model
and the EN61000-4-2 Air/Contact Discharge tests.
The Human Body Model has been the generally accepted
ESD testing method for semiconductors. This test is intended
to simulate the human body’s potential to store electrostatic
energy and discharge it to an integrated circuit upon close
proximity or contact. This method will test the IC’s capability
to withstand an ESD transient during normal handling such
as in manufacturing areas where the ICs tend to be handled
frequently.
EN61000-4-2 is used for testing ESD on equipment and
systems. For system manufacturers, they must guarantee
a certain amount of ESD protection since the system itself is
exposed to the outside environment and human presence.
EN61000-4-2 species that the system is required to with-
stand an amount of static electricity when ESD is applied to
exposed metal points and surfaces of the equipment that are
accessible to personnel during normal usage. The transceiver
IC receives most of the ESD current when the ESD source
is applied to the connector pins.
There are two methods within EN61000-4-2, the Air Dis-
charge method and the Contact Discharge method. With
the Air Discharge Method, an ESD voltage is applied to the
equipment under test through air, which simulates an electri-
cally charged person ready to connect a cable onto the rear
of the system and the high energy potential on the person
discharges through an arcing path to the rear panel of the
system before he or she even touches the system. The Con-
tact Discharge Method applies the ESD current directly to the
EUT. This method was devised to reduce the unpredictability
of the ESD arc. The discharge current rise time is constant
since the energy is directly transferred without the air-gap
arc inconsistencies.
Zywyn
Specications subject to change without notice
5 May 2006
rev. 1.6


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