ADM222ANZ - 200kbps RS-232 Transceiver | Analog Devices
MPN: ADM222ANZ ✓ AktifADM222ANZ Ringkasan
An RS-232 transceiver is an interface IC that combines digital logic-level transmitters and receivers with analog line-driver circuitry. The transmitter converts TTL or CMOS signals into RS-232 bipolar levels, while the receiver converts RS-232 levels back into logic-compatible signals. Within the interface hierarchy, the ADM222 belongs to the RS-232 transceiver family of interface ICs used to connect computer, industrial-control, and instrumentation equipment over short point-to-point links.
The ADM222ANZ supports data rates up to 200 kbps from one 4.5 V to 5.5 V supply. Its two-driver, two-receiver configuration can support two data paths, such as one full-duplex channel and one additional unidirectional link, depending on the system wiring. The shutdown function disables the device to reduce supply current to 0.1 uA, making power management useful in portable or intermittently operated equipment.
The integrated on-board DC-DC converter uses 0.1 uF external charge-pump capacitors to develop positive and negative RS-232 voltage levels. This architecture simplifies the power system because the device requires only one supply rail. Designers must still account for capacitor tolerance, ESR, wiring length, and the leakage and loading characteristics of the connected RS-232 network.
Typical applications include legacy serial ports, industrial controllers, test equipment, data-acquisition systems, and service interfaces. The 18-lead plastic DIP package is useful for through-hole industrial and maintenance designs where socketed or leaded construction improves serviceability. The 7.62 mm lead pitch also permits compatibility with conventional perforated-board layouts.
When laying out the circuit, place the charge-pump capacitors close to their specified pins and route RS-232 driver outputs away from sensitive receiver inputs. Confirm that the selected connector, cable, and remote equipment use compatible signal definitions and grounding practices. Where a modern design does not require legacy RS-232, an alternative interface such as USB or differential Ethernet may offer greater speed, cable distance, and noise immunity.
This product page summarizes the ADM222ANZ operating characteristics, verified package information, application guidance, and replacement considerations. It also provides design-focused comparisons that help engineers assess supply voltage, signal count, data rate, shutdown behavior, and through-hole package requirements before committing a board layout.
Pilihan pengganti yang segera untuk ADM222ANZ — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Tiada pilihan pengganti yang segera untuk produk ini.
Minta AlternatifADM222ANZ Spesifikasi
| Product Type | RS-232 transceiver |
| Driver Count | 2 drivers |
| Receiver Count | 2 receivers |
| Maximum Data Rate | 200 kbps |
| Nominal Supply Voltage | 5 V |
| Tegangan Pemberi Arus Operasi | 4.5 V to 5.5 V |
| Charge-Pump Capacitance | 0.1 uF |
| Shutdown Supply Current | 0.1 uA |
| Protocol | RS-232 |
| Interface Compliance | EIA-232-E and V.28 |
| Kemasan | 18-lead plastic DIP |
| Lead Pitch | 7.62 mm |
| Package Width | 0.300 in |
| Packaging | Tube |
| Shutdown Control | Yes |
| On-Board DC-DC Converter | Yes |
Panduan Konfigurasi Pin ADM222ANZ 0.300 in
Konfigurasi pin untuk ADM222ANZ (0.300 in 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 ADM222ANZ.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
ADM222ANZ patut untuk 6 aplikasis: Legacy Computer Serial Port, Industrial Control Interface, Data Acquisition Equipment, Test and Measurement Console, Remote Monitoring Terminal, Maintenance and Configuration Port.
Legacy Computer Serial Port
The ADM222ANZ fits legacy computer and peripheral interfaces that require RS-232 levels rather than modern USB or differential Ethernet. Its two drivers and two receivers support two RS-232 signal paths from one 4.5 V to 5.5 V supply, while the 200 kbps rate is suitable for many legacy control and configuration protocols. The 18-lead plastic DIP format also simplifies through-hole construction and field replacement. The principal design consideration is connector pin assignment and signal-ground compatibility with the connected equipment.
Disebarkan
Industrial Control Interface
The ADM222ANZ is suitable for point-to-point control links between industrial controllers, sensors, and service equipment using RS-232. The 200 kbps capability provides more bandwidth than many legacy serial protocols require, and the single 5 V supply simplifies interface implementation in 24 V industrial systems after regulation. The shutdown pin can reduce consumption when a channel is inactive. Designers should include protection appropriate to the installation environment and verify ground referenced to the connected equipment.
Disebarkan
Data Acquisition Equipment
The ADM222ANZ can provide the legacy RS-232 command channel for laboratory instruments, data loggers, and acquisition controllers. Two transmitters and two receivers allow bidirectional instrument control and status reporting, while the 200 kbps maximum rate covers common serial command formats. Because the interface uses external 0.1 uF charge-pump capacitors, placement should follow the manufacturer layout guidance to prevent charge-pump disturbance from reaching sensitive analog measurement circuits.
Disebarkan
Test and Measurement Console
The ADM222ANZ fits test consoles and service interfaces that communicate with legacy instruments through RS-232. The 200 kbps data rate supports command exchange, configuration downloads, and status reporting while the 18-lead DIP package supports through-hole test fixtures and operator-accessible circuit boards. The shutdown function can isolate the interface when the console is inactive. Confirm that the remote device uses compatible voltage levels, connector wiring, flow control, and signal-ground conventions before deployment.
Disebarkan
Remote Monitoring Terminal
The ADM222ANZ can serve as the short-range serial link in remote monitoring equipment where an established RS-232 infrastructure already exists. Its two transmitters and two receivers permit control and telemetry over two available RS-232 paths, and the 200 kbps rate is suitable for periodic sensor reports and configuration messages. The shutdown function is useful in duty-cycled systems, reducing supply current to 0.1 uA while the interface is inactive. Cable length and grounding remain important because RS-232 is intended primarily for short-distance point-to-point communication.
Disebarkan
Maintenance and Configuration Port
The ADM222ANZ is appropriate for manufacturing and maintenance equipment that uses RS-232 to configure or diagnose a finished product. Its through-hole 18-lead package is durable and easy to inspect or replace on a service board, while the shutdown function helps avoid unnecessary power consumption. The interface can be disabled without removing the entire board from service. For exposed service connectors, add suitable transient and ESD protection and keep the RS-232 driver routing separated from sensitive analog sections.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk ADM222ANZ — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini |
|---|---|
| Brand | Analog Devices |
| Package | 18-lead plastic DIP |
| Product Type | RS-232 transceiver |
| Driver Count | 2 drivers |
| Receiver Count | 2 receivers |
| Maximum Data Rate | 200 kbps |
| Operating Supply Voltage | 4.5 V to 5.5 V |
| Charge-Pump Capacitance | 0.1 uF |
| Shutdown Supply Current | 0.1 uA |
| Interface Compliance | EIA-232-E and V.28 |
Penyeberangsung Jelas
- Through-hole interface with integrated power control (vsADM232AANZ)
- Single-supply RS-232 operation (vsADM242)
- Low-power inactive state (vsADM222AN)
Catatan Desain
Place the two 0.1 uF charge-pump capacitors directly beside their associated ADM222ANZ pins, using short traces and an available ground-plane reference. The charge-pump nodes can carry high-frequency switching energy, so routing them away from receiver inputs and analog measurement sections reduces coupling. Follow the Analog Devices manufacturer datasheet layout for capacitor polarity, voltage rating, and the exact terminal assignments rather than routing from a generic RS-232 example.
Keep each RS-232 driver route as short as practical and separate from the receiver input associated with the same circuit. RS-232 is a point-to-point interface, so long parallel runs, stubs, and unnecessary connectors increase capacitive loading and susceptibility to noise. Maintain a consistent signal-ground strategy between the two connected systems, and test the completed interface with the intended cable because connector orientation and shield termination can materially affect noise immunity.
Use a supply within the ADM222ANZ operating range of 4.5 V to 5.5 V, and provide local bypass capacitance close to the supply pins. Although the device uses 0.1 uF charge-pump capacitors to create bipolar RS-232 levels, the external capacitors are not a substitute for normal supply decoupling. Include the SHDN control in the system power-state design so the transceiver can remain disabled at 0.1 uA when the interface is not active.
Do not treat every 2/2 RS-232 transceiver as a drop-in replacement. The ADM222ANZ uses an 18-lead through-hole package, while several commonly encountered RS-232 devices use 16-lead or 20-lead small-outline packages. Check pin numbering, shutdown polarity, charge-pump connections, receiver enable behavior, supply range, and exposed-package requirements before replacing the device. A functionally equivalent IC can still require a PCB redesign.
Maklumat Kesediaan
The EIA-232-E and V.28 interface requirements are stated in the manufacturer information, but no specific RoHS, REACH, halogen-free, or conflict-minerals declaration is identified for this ordering code.
