ADM206ARS - 4/3 RS-232 Transceiver, 200kbps, +5V | Analog Devices
MPN: ADM206ARS ✓ AktifADM206ARS Ringkasan
An RS-232 transceiver is the interface circuit that converts between single-ended TTL/CMOS logic levels and the bipolar signal defined by the EIA-232-E (V.28) standard. Physically it sits between a host UART or microcontroller and a D-sub or RJ-45 serial connector. In the signal-chain hierarchy an RS-232 transceiver is a line-driver/receiver interface IC, a member of the broader interface IC family, and ultimately part of the semiconductor category of data-communication components.
Key features distinguish the ADM206ARS in portable and space-constrained designs. The single +5 V rail and integrated on-chip charge pump generate the required positive and negative output levels internally, so only 0.1 uF capacitors are needed on the board. Four drivers allow four outgoing channels and three receivers handle three incoming channels in one 24-lead SSOP, which saves considerable board area versus four discrete driver/receiver pairs. A dedicated shutdown pin drops the supply current for power-down, while an enable pin gates the receivers without a full power cycle.
Internally the ADM206ARS combines CMOS logic with bipolar driver stages. The charge-pump voltage doubler generates a positive rail above VCC and the inverting capacitor derives a negative rail, so the driver outputs swing beyond the logic rails while still meeting EIA-232-E levels. The receivers use a threshold in the region of the difference between plus and minus inputs, giving noise immunity typical of the V.28 interface, and the digital inputs are TTL/CMOS compatible for direct connection to UARTs.
Typical uses include PC and peripheral serial ports, modems, printers, industrial instrumentation and test equipment, and multi-channel data acquisition front ends. It is also common in embedded control boards and data loggers that need several RS-232 ports but have only a +5 V rail available, and in legacy equipment refurbishment where the original plus 12 V supply has been removed.
Design with the ADM206ARS requires attention to two areas: the charge-pump capacitors must be placed adjacent to the device pins to limit switching noise, and unused driver and receiver channels must be properly terminated so idle outputs do not pick up noise.
This page combines the ADM206ARS electrical characteristics with a drop-in alternative shortlist, a parameter-by-parameter comparison and practical layout guidance, giving engineers a design-ready reference beyond the basic manufacturer datasheet.
Pilihan pengganti yang segera untuk ADM206ARS — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera ADM206ARS (sama faktor bentuk dan kaki) — berbeza dalam Package, Number of Drivers, Enable Control, Interface Standard, Nominal Supply Voltage.
ADM206ARZ
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak DisahkanHubungi untuk harga
Lihat Datasheet →ADM207ARZ
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak DisahkanHubungi untuk harga
Lihat Datasheet →ADM205ARZ
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
ADM213ARZ
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak DisahkanHubungi untuk harga
Lihat Datasheet →ADM203ARZ
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
ADM206ARS Spesifikasi
| Product Type | RS-232 transceiver (4 drivers / 3 receivers) |
| Number of Drivers | 4 |
| Number of Receivers | 3 |
| Maximum Data Rate | 200 kbps |
| Tegangan Pemberi Arus | +5 V single supply (CMOS) |
| External Charge-Pump Capacitors | 0.1 uF |
| Kemasan | 24-lead SSOP |
| Jenis Pemasangan | Surface mount |
| Digital Input Levels | TTL/CMOS compatible |
| Digital Output Levels | TTL/CMOS compatible |
| Interface Standard | EIA-232-E / V.28 |
| Shutdown Pin | Yes |
| Pin penggunaan | Yes |
| Pin Compatibility | Compatible with MAX206/MAX211/MAX213 family |
| Status Lingkungan Hidup | Production |
Panduan Konfigurasi Pin ADM206ARS 24-lead ssop
Konfigurasi pin untuk ADM206ARS (24-lead ssop 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 ADM206ARS.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
ADM206ARS patut untuk 6 aplikasis: Legacy PC Serial Port Interface, Industrial Instrumentation and Data Acquisition, Modem, Printer and Point-of-Sale Connectivity, Embedded UART Expansion in Control Boards, Test and Measurement Equipment, Portable Data Loggers and Handheld Terminals.
Legacy PC Serial Port Interface
The ADM206ARS is a natural fit for adding or restoring RS-232 ports on motherboards and legacy boards that expose only a +5 V rail. Four drivers and three receivers in a single 24-lead SSOP let one IC replace several discrete driver/receiver pairs, and the integrated charge pump needs just 0.1 uF capacitors per rail instead of a discrete doubler and inverter stage. Because the digital pins are TTL/CMOS compatible, the transceiver connects directly to a UART without level shifters. For port multipliers, printers and scanners on refurbished industrial PCs, this integration reduces both PCB area and assembly steps while keeping the signalling compliant with EIA-232-E and V.28.
Disebarkan
Industrial Instrumentation and Data Acquisition
In plant instrumentation the ADM206ARS provides the multi-channel RS-232 fan-out needed by analyzers, weighing systems and process controllers while operating from the +5 V supply already present on most control boards. Driving four channels from one package reduces the connector count of multi-instrument racks, and the 200 kbps rate is comfortably above the 9600 to 115200 baud typical of legacy field protocols. The shutdown pin lets a channel bank be powered down between measurement bursts, and the enable pin gates the receivers without cycling the supply, which helps with sensor-settle timing. Add external surge protection at the connector for cables that leave the cabinet.
Disebarkan
Modem, Printer and Point-of-Sale Connectivity
Modems, thermal receipt printers and point-of-sale terminals still rely on the RS-232 port, and the ADM206ARS allows one controller to service several such peripherals from a single +5 V source. The four drivers support separate transmit lines to a modem, a printer and a card reader, while three receivers absorb status and data handshakes coming back from those devices. The enable pin is useful for tri-stating receive lines during firmware download so a boot loader is not disturbed by peripheral chatter, and the shutdown pin supports battery-backed terminals that must reduce current between transactions. The 0.1 uF capacitor requirement keeps the charge-pump loop small enough for compact point-of-sale hardware.
Disebarkan
Embedded UART Expansion in Control Boards
Microcontroller boards often run out of UART pins long before they run out of PCB area, and the ADM206ARS adds three receive and four transmit RS-232 channels without consuming another processor pin set. The enable and shutdown pins are driven directly from a GPIO for channel isolation between boot and run phases, which is valuable in multi-boot industrial controllers. With a 200 kbps ceiling the device supports both legacy modem baud rates and faster point-to-point links to motion controllers. Because the transceivers are TTL/CMOS compatible, they also suit older 5 V microcontroller families where 3.3 V level shifting would otherwise be required on every port.
Disebarkan
Test and Measurement Equipment
Lab instruments such as bench power supplies, loop calibrators and signal generators still expose RS-232 control ports, and the ADM206ARS fits these instruments well because the +5 V supply is already inside the enclosure. Combining four drivers and three receivers in one 24-lead SSOP shortens the instrument front panel wiring and reduces the number of rails that must be routed to the logic section. The shutdown pin supports automatic self-test routines that put the serial port into a low-power state between measurement cycles, and the enable pin lets the instrument disconnect receive lines while its own relay-switched outputs are active, avoiding ground-bounce coupling into the measurement path.
Disebarkan
Portable Data Loggers and Handheld Terminals
Battery-powered data loggers and handheld terminals usually carry a single +5 V or rechargeable-derived rail, which makes the ADM206ARS a practical choice for adding an RS-232 port to download archives to a laptop or dock. The shutdown pin is the key benefit in power-sensitive designs because it drops the transceiver supply current during field standby, and the enable pin isolates the receive path from the attached cable while the operator is using the keypad. Four driver channels allow the logger to serve a cradle, a GPS receiver and an external sensor pod through one connector shell. The small 24-lead SSOP footprint and the minimal 0.1 uF capacitor count conserve board area in a sealed enclosure.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk ADM206ARS — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | ADM206ARZ | ADM207ARZ | ADM205ARZ | ADM213ARZ | ADM203ARZ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | SSOP-24 | SSOP-24 - same | SSOP-24 - same | SSOP-24 - same | SSOP-24 - same | SSOP-24 - same |
| Supply Voltage | +5 V single supply (CMOS) | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply |
| Charge-Pump Capacitor Value | 0.1 uF | 0.1 uF | 0.1 uF | 0.1 uF | 0.1 uF | 0.1 uF |
| Pin Compatibility | Pin compatible with MAX206/MAX211/MAX213 class devices | Identical pinout | ADM2xx family pinout | ADM2xx family pinout | ADM2xx family pinout | ADM2xx family pinout |
Penyeberangsung Jelas
- Four drivers and three receivers integrated in one 24-lead SSOP (vsMAX232NSR)
- Single +5 V supply with only 0.1 uF external charge-pump capacitors (vsADM203ARZ)
- Shutdown pin plus enable pin for port isolation and power gating (vsADM207ARZ)
Catatan Desain
Place the 0.1 uF charge-pump capacitors directly across the C1 and C2 pins of the ADM206ARS, with the shortest possible traces and a solid ground plane return. The charge-pump switching node is high-current and high-di/dt, so long loops radiate into adjacent analog and RF sections of the board. If the design is sensitive, add a ferrite bead or small series resistor in the charge-pump path only if the manufacturer application guidance permits it, and keep the driver outputs away from sensitive inputs on the opposite side of the board.
Do not leave unused RS-232 driver outputs floating. An unused driver input should be tied to a defined logic level so its output stays at a stable state, and an unused receiver input should be tied to ground or to the local logic reference to avoid picking up noise and toggling. This matters on the ADM206ARS because it offers four drivers but only three receivers, so there is always one driver channel that may be unused in a two-way design.
Keep the ground return path from the transceiver ground pins continuous and place them close to the connector-side ground entry points. RS-232 receivers reject common-mode noise, but only if the signal reference is solid; a split or perforated ground plane under the transceiver can undermine that rejection. Route driver outputs to the connector through the shortest path possible, since long exposed traces act as antennas, and keep the enable and shutdown control traces away from the charge-pump nodes.
The on-chip charge pump switches continuously at a frequency above the RS-232 data rate, so it can contribute broadband noise on boards that also carry sensitive analog signals. Where a board mixes RS-232 with sensor front ends, consider placing the transceiver near the connector edge, keeping analog traces on the opposite side of the board, and providing local bulk decoupling at VCC. The shutdown pin is an effective EMI tool as well: pulling it low during sensitive measurement windows removes the switching noise entirely at the cost of the port.
Maklumat Kesediaan
The Analog Devices ADM206 product page states the family is in production and is a single +5 V CMOS RS-232 transceiver for EIA-232-E and V.28 interfaces. RoHS, REACH, lead-free and halogen-free statements are published on the individual product ordering pages and are not reproduced here; confirm the status for the specific ordering code you receive.
