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ZT207E Schematic ( PDF Datasheet ) - Zywyn

Teilenummer ZT207E
Beschreibung (ZT207E - ZT213E) Low Power 5V 250Kbps RS232 Transceivers
Hersteller Zywyn
Logo Zywyn Logo 




Gesamt 14 Seiten
ZT207E Datasheet, Funktion
ZT230E Low Power 5V 250kbps RS232 Transceivers
Zywyn Corporation
Zywyn
ZT230E
ZT207E, ZT208E
ZT211E, ZT213E
Low Power 5V 250kbps RS232 Transceivers
Features
• Meets EIA/TIA-232F and CCITT V.28/V.24
specications for VCC at +5V ±10%
• Low Quiescent Current – 3mA.
• Low Shutdown Current (where applicable) -
1μA typical, 10μA max.
• Guaranteed Standard Data Rate 250kbps
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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 MAX207E, SP207E,
MAX208E, SP208E, MAX211E, SP211E,
MAX213E, SP213E,
• High Data Rate at 1000kbps Available on ZT230F
Series
General Description
The ZT230E series devices are +5V powered EIA/TIA-232
and V.28/V.24 communication interfaces with low power
requirements. These transceivers consist of combinations
up to ve line drivers, ve line receivers and the proprietary
switch-capacitor regulated voltage converters. The ZT211E
and ZT213E feature a low power shutdown mode which draws
as little current as 1μA typical with receiver outputs tri-stated
and in wake-up. These devices operate from a single +5V
power supply at the guaranteed data rate of 250k 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
ZT207E
ZT208E
ZT211E
ZT213E
# 0f
RS232
Tx
5
4
4
4
# of
RS232
Rx
3
4
5
5
# of Rx
active in
SD
0
0
0
2
# of
0.1μF
caps
Shut
Down
Wake
Up
TTL
Tri-
State
4 No No No
4 No No No
4 Yes No Yes
4 Yes Yes Yes
Data
Rate
(kbps)
250
250
250
250
ESD HBM
on
RS232 I/O
± 15kV
± 15kV
± 15kV
± 15kV
Pin-to-Pin
Cross
SIPEX
SP207E
SP208E
SP211E
SP213E
Pin-to-Pin
Cross
MAXIM
MAX207E
MAX208E
MAX211E
MAX213E
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






ZT207E Datasheet, Funktion
Zywyn Corporation
ZT230E
RS232 Signal Characteristics
The charge pump voltage converter efciently converts the
necessary voltage for the driver's output transistors so that
the RS232 output is close to the ideal rail voltage of 10V.
While loaded with a typical RS232 load, the driver's output
level only drops 0.2V from its open circuit voltage. Zywyn's
low-drop driver circuitry working with its efcient voltage
regulator allows superior line driving capability while meeting
the requirements of TIA/EIA-232-E.
The drivers are inverting transmitters, which accept TTL or
CMOS inputs and produces the RS-232 compliant signals
that is inverted relative to the input logic levels. Typically the
RS232 output voltage swing is ±6V. Even under the worst
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dard specications. The transmitter outputs are protected
against innite short-circuits to ground without degradation
in reliability. The instantaneous slew rate of the transmitter
output is internally limited to a maximum of 30V/μs in order
to meet the TIA/EIA-232-E requirements.
The receivers convert RS-232 input signals to inverted TTL
signals. The inputs have a typical hysteresis margin of 500mV
in order to account for signal degradation caused by system
interference and other noise related disturbers. This ensures
that the receiver is relatively immune to noisy transmission
lines. The input thresholds are 0.8V minimum and 2.4V
maximum, which are within the TIA/EIA-232 requirements.
The receiver inputs are also protected against voltages up
to ±25V. Should an input be left unconnected, a 5kohm pull-
down resistor to ground will force the output of the receiver
to a high state.
Specification
Mode of Operation
No. of Drivers and Receivers
Allowed on One Line
Maximum Cable Length
RS-232D
Single-Ended
1 Driver
1 Receiver
50 feet
RS-423A
Single-Ended
1 Driver
10 Receivers
4,000 feet
RS-422
Differential
1 Driver
10 Receivers
4,000 feet
Maximum Data Rate
20 kbps
Driver Output Maximum Voltage
± 25V
Driver Output Signal Level
Loaded
±5V
Unloaded
Driver Load Impedance
±15V
3 ~ 7KΩ
Maximum Driver Output Current
(High Impedance State)
Power On
Power Off
VMAX/300
Slew Rate
30V/µs max.
Receiver Input Voltage Range
±15V
Receiver Input Sensitivity
Receiver Input Resistivity
±3V
3 ~ 7KΩ
Table 2. EIA Standard Parameter Summary
100 kbps
± 6V
±3.6V
±6V
450 Ω
100µA
Controls Provided
±12V
±200mV
4KΩ min.
10 Mbps
- 0.25V to +6V
±2V
±5V
100 Ω
±100µA
-7V to +7V
±200mV
4KΩ min.
RS-485
Differential
32 Drivers
32 Receivers
4,000 feet
10 Mbps
- 7V to +12V
RS-562
Single-Ended
1 Driver
1 Receiver
C 2,500 pF@ <20kbps;
C 1,000 pF@ >20kbps
64 kbps
- 3.7V to +13.2V
±1.5V ±3.7V
±5V ±13.2V
54 Ω 3 ~ 7KΩ
±100µA
±100µA
-7V to +12V
±200mV
12KΩ min.
30V/µs max.
±15V
±3V
3 ~ 7KΩ
Zywyn
Specications subject to change without notice
6 May 2006
rev. 1.6

6 Page









ZT207E pdf, datenblatt
Zywyn Corporation
www.DataSheet4U.com
ZT230E
24-pin wSOIC
Zywyn
28-pin wSOIC
Specications subject to change without notice
12 May 2006
rev. 1.6

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