ADM206EAR - 4/3 RS-232 Transceiver, 200 kbps | Analog Devices
MPN: ADM206EAR ✓ AktifADM206EAR Ringkasan
An RS-232 transceiver is an interface IC that combines voltage-level drivers and receivers with charge-pump circuitry. The drivers convert low-voltage CMOS logic signals into RS-232 bipolar levels, while the receivers convert bipolar line signals back into CMOS-compatible levels. As a member of the interface IC hierarchy, the ADM206EAR sits between UART controllers and external RS-232 equipment, providing signal translation, port direction control, and electrostatic-discharge protection.
Key features include four drivers, three receivers, operation from a single +5 V supply, and data rates up to 200 kbps. The shutdown and enable controls support power management and port isolation. According to the Analog Devices ADM206E product information, all devices in the family conform to EIA-232E and CCITT V.28 specifications. Their integrated protection is intended to withstand harsh electrical environments and reduce the need for separate TransZorbs on protected RS-232 lines.
The device uses on-chip charge pumps to generate the positive and negative voltages required by RS-232 drivers from one +5 V source. Charge-pump capacitors should be connected exactly as shown in the manufacturer application circuit. Because the line interface uses bipolar voltage levels, the device is intended for RS-232 ports, not RS-485 or RS-422 multidrop networks. Driver and receiver enable controls can suppress unwanted activity during shutdown or when multiple interfaces share a system enclosure.
Typical uses include industrial serial consoles, laboratory instrument control, point-of-sale terminals, data-acquisition equipment, and embedded systems connected through legacy RS-232 ports. The four-driver and three-receiver arrangement supports several unidirectional channels or a mixture of data and control lines. Because maximum cable length and data rate are inversely related, the selected baud rate and cable type should be checked against the target RS-232 application.
For a robust layout, place the 0.1 uF charge-pump capacitors close to their designated pins, route each RS-232 line directly to its connector, and keep unprotected logic-side traces away from cable transients. The datasheet pin-description table should be used to verify every connection before manufacturing. The enable and shutdown pins also require defined logic levels during reset so the drivers do not start in an unintended state.
This product page combines the manufacturer interface overview, package information, ordering details, replacement guidance, and practical PCB design notes. It also distinguishes the exact ADM206EAR from related ADM2xxE devices whose driver counts, shutdown behavior, enable architecture, or package differ. The result helps engineers determine pin compatibility, data-rate suitability, and the correct role for each RS-232 channel before committing a board layout.
Pilihan pengganti yang segera untuk ADM206EAR — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
ADM206EARZ
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ADM206EAR Spesifikasi
| Product Type | RS-232 transceiver |
| Tegangan Pemberi Arus | +5 V |
| Number of Drivers | 4 |
| Number of Receivers | 3 |
| Maximum Data Rate | 200 kbps |
| Charge-Pump Capacitor | 0.1 uF |
| Logic Level | CMOS |
| Interface Standard | RS-232 |
| EIA Standard | EIA-232E |
| CCITT Standard | V.28 |
| ESD Protection Contact Discharge | 8 kV |
| ESD Protection Air-Gap Discharge | 15 kV |
| ESD Human Body Model | 15 kV |
| Fast Transient Burst Immunity | IEC 1000-4-4 |
| Kemasan | 24-pin SOIC |
| Jenis Pemasangan | Surface mount |
| Shutdown Control | Yes |
| Enable Control | Yes |
Panduan Konfigurasi Pin ADM206EAR 24-pin soic
Konfigurasi pin untuk ADM206EAR (24-pin soic pakai). Penomeran pin, fungsi, dan garis bentuk koneksi ditakrifkan dalam dokumen pengeluar. Rujuk dokumen untuk kebentuk dan pedoman pengasman.
Tiada data garisan pin yang diperoleh untuk ADM206EAR.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
ADM206EAR patut untuk 6 aplikasis: Industrial Serial Console Interface, Laboratory Instrument Control, Point-of-Sale Terminal Connection, Data-Acquisition Equipment, Embedded Service and Configuration Port, Security and Access-Control Terminal.
Industrial Serial Console Interface
The ADM206EAR is appropriate for connecting a controller or embedded module to an industrial RS-232 console through a single +5 V supply. Its four drivers and three receivers support multiple data and control lines, while the 200 kbps capability provides ample margin for character-oriented console traffic. The shutdown pin can reduce activity during reset, and enable control allows individual functions to be isolated when the system detects a fault. Keep the RS-232 traces away from sensitive analog circuitry and provide a solid chassis or signal-ground return path to reduce common-mode noise. The manufacturer application circuit should govern charge-pump capacitor placement and connector-side protection.
Disebarkan
Laboratory Instrument Control
The ADM206EAR can interface legacy laboratory instruments that use RS-232 command ports. The +5 V supply requirement simplifies integration with controller boards that already operate from 5 V, and the 200 kbps maximum supports common serial instruments without requiring a high-speed differential interface. Multiple driver and receiver channels are useful for transmitting commands and receiving status or measurement data. Enable and shutdown inputs support controlled initialization, while the family ESD ratings improve robustness against charged cables and connector contacts. Firmware should include timeouts and retries because RS-232 does not provide collision detection or modern bus arbitration.
Disebarkan
Point-of-Sale Terminal Connection
A point-of-sale controller can use the ADM206EAR to bridge a UART-based system to an RS-232 peripheral such as a scale, printer, or customer display. The four-driver and three-receiver configuration permits data and control signals to share one interface, and the 200 kbps rate exceeds the throughput of many legacy peripheral protocols. The shutdown function helps reduce power and output activity during terminal reset. Design the PCB so cable-side routing remains away from display and touchscreen electronics, and verify ground continuity through the chosen connector because RS-232 signal integrity depends heavily on reference-ground return.
Disebarkan
Data-Acquisition Equipment
The ADM206EAR is suitable for legacy data-acquisition and test systems that expose RS-232 configuration or measurement ports. Its 3.3 V-compatible CMOS logic side connects to modern control hardware, while the line drivers perform the required bipolar RS-232 level conversion. The shutdown pin can place the interface into a low-activity state, and the enable pin supports coordinated channel startup. For acquisition systems, synchronize software handshaking with the interface-control pins and validate the command latency at the selected baud rate. Use shielded cable and proper chassis grounding where the equipment must operate near motors, relays, or switching power supplies.
Disebarkan
Embedded Service and Configuration Port
The ADM206EAR can provide a service port for embedded industrial equipment that retains a legacy configuration connector. Its four drivers and three receivers support command, response, and service-control lines, while shutdown and enable inputs permit the port to remain inactive during normal product operation. The single +5 V architecture aligns with many RS-232 transceivers that use external 0.1 uF charge-pump capacitors. Firmware should prevent simultaneous assertion of conflicting control states and should present a stable device identifier for service tools. The interface also benefits from the family’s listed ESD and burst-immunity protection when technicians connect cables in uncontrolled service environments.
Disebarkan
Security and Access-Control Terminal
The ADM206EAR can connect access-control readers, door controllers, or security peripherals that use RS-232 for command and event traffic. The listed 8 kV contact and 15 kV air-gap ESD protection is valuable when cables connect to accessible equipment, while shutdown and enable controls let the controller suppress line activity during arming or maintenance transitions. A 200 kbps interface rate is more than sufficient for typical badge-reader and event-controller protocols. Security-oriented designs should add protocol authentication at the application layer because RS-232 provides physical-level signaling rather than encryption, and should ensure unused inputs cannot float during firmware update or recovery.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk ADM206EAR — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | ADM206EARZ |
|---|---|---|
| Package | 24-pin SOIC | 24-pin SOIC |
| Brand | Analog Devices | Analog Devices |
| Transceiver Configuration | 4 drivers / 3 receivers | 4 drivers / 3 receivers |
| Supply Voltage | +5 V | +5 V |
| Maximum Data Rate | 200 kbps | 200 kbps |
| Charge-Pump Capacitor | 0.1 uF | 0.1 uF |
| Interface Standard | RS-232 | RS-232 |
| Shutdown Control | Yes | Yes |
| Enable Control | Yes | Yes |
Penyeberangsung Jelas
- Exact four-driver and three-receiver channel allocation (vsADM207ARZ)
- Single +5 V operation with 0.1 uF charge-pump capacitors (vsADM206EARZ)
- Robust family-level ESD and transient protection (vsADM206EARZ)
Catatan Desain
Place the 0.1 uF charge-pump capacitors close to the pins shown in the Analog Devices ADM206 application circuit and keep their return-current paths short. Route RS-232 connector traces directly to the transceiver rather than sharing paths with clocks, ADC signals, or switching-power connections. Separate logic-side and cable-side return-current paths where practical so transient current from an ESD event does not flow through sensitive system ground.
Treat RS-232 as a point-to-point, unbalanced interface with a ground reference through the cable. Confirm that the selected connector carries the required signal and return conductors, and do not rely solely on chassis shielding for logic-ground continuity. At higher baud rates, use a suitable cable and keep the interface away from motors and switching regulators; lower the baud rate when long or unshielded cables cause communication errors.
Do not substitute a related ADM2xxE device solely because it has a 24-pin SOIC package. Compare every pin, the driver enable truth table, receiver enable behavior, shutdown polarity, charge-pump connections, and unused-channel requirements against the ADM206EAR datasheet. Related devices may have different output-control behavior even when their receiver and driver counts are similar. This check is essential before treating ADM207ARZ or another family member as a direct replacement.
Decouple the +5 V supply locally at the ADM206EAR with the capacitor arrangement specified by the manufacturer. The charge-pump circuitry creates internal ripple on the supply rails, so inadequate local decoupling can couple noise into adjacent circuitry. Validate the voltage at the device pins during simultaneous driver activity and when the transmit and shutdown states change. Provide defined logic levels for EN and shutdown during reset to avoid unintended line activity.
Maklumat Kesediaan
The family information identifies compliance with EMC, ESD, and burst-immunity requirements, but exact RoHS, REACH, lead-free, halogen-free, and conflict-minerals status for the ADM206EAR ordering code is not stated.