PDF ZT213E Data sheet ( Hoja de datos )

Número de pieza	ZT213E
Descripción	(ZT207E - ZT213E) Low Power 5V 250Kbps RS232 Transceivers
Fabricantes	Zywyn
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No Preview Available ! 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 speciﬁcations for VCC at +5V ±10% • Low Quiescent Current – 3mA. • Low Shutdown Current (where applicable) - 1μA typical, 10μA max. • Guaranteed Standard Data Rate 250kbps www.DataShe•etCP4Uro.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 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 ﬁve line drivers, ﬁve 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 Speciﬁcations 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 1 page Zywyn Corporation 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 ﬂuctuations. 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 efﬁciency of these bi- www.DataShedeirt4eUc.tcioomnal 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 efﬁcient, stable and compliant EIA/RS232 levels with superior low power consumption. Controlled Enable and Power-Down The ZT211E and ZT213E 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 ZT211E, enable is active low, in which a logic LOW applied to the EN pin will enable the receiver outputs. For the ZT213E, enable is active high in which a logic HIGH applied to the EN pin will enable the receiver outputs. ZT211E and ZT213E 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. ZT213E 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 ZT213E that is itself in the shutdown mode. The ring indicator signal would propagate through the ZT213E to the power management circuitry of the computer to power up the microprocessor and the ZT213E drivers. After the supply voltage to the ZT213E reaches +5.0V, the SD pin can be disabled, taking the ZT213E out of the shutdown mode. All receivers that are active during shutdown maintain 500mV (typ.) of hysteresis. ZT230E 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. Zywyn Speciﬁcations subject to change without notice 5 May 2006 rev. 1.6 5 Page Zywyn Corporation Package Information ZT230E www.DataSheet4U.com 1.73 0.05 1.75 0.22 0.30 0.13 0.15 8.07 7.40 7.80 5.00 5.30 0.65 0.56 0.75 0 1.99 0.21 0.38 0.20 8.33 8.20 5.60 0.97 0.076 8 0.068 0.002 0.0086 0.0051 0.317 0.291 0.197 0.022 0 0.069 0.012 0.006 0.307 0.209 0.0256 0.030 0.079 0.008 0.015 0.0079 0.328 0.323 0.220 0.037 0.003 8 24-pin SSOP 24L Zywyn 28-pin SSOP Speciﬁcations subject to change without notice 11 May 2006 rev. 1.6 11 Page

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