ADM207EAR - 5/3 RS-232 Transceiver | Analog Devices
MPN: ADM207EAR ✓ AktifADM207EAR Ringkasan
An RS-232 transceiver is an interface IC that converts between digital logic levels and the voltage levels used by RS-232 serial links. The driver stage boosts logic signals to RS-232 levels, while the receiver stage restores transmitted data to logic-compatible levels. Within the broader hierarchy, an RS-232 transceiver is a line interface, a communications interface IC, and ultimately a semiconductor for data acquisition, control, and industrial communication systems.
Key characteristics include operation from a single 5 V power supply, five drivers, three receivers, and a maximum data rate of 230 kbps. The ADM207EAR family also incorporates ESD protection on the RS-232 pins, with a listed protection level of ±15 kV. These features support reliable operation in electrically noisy environments where cables, connectors, and external equipment can expose the interface to electrostatic discharge events.
The ADM207E family is designed for robust RS-232 and V.28 interface equipment. Its combination of multiple driver outputs, multiple receiver inputs, and a single 5 V rail allows one transceiver to support several signal directions or peripheral connections. The family is backward compatible with earlier ADM2xx products, facilitating migration of established interface designs while retaining familiar RS-232 electrical behavior.
Typical applications include industrial serial controllers, test and measurement equipment, computer peripherals, instrumentation, and point-to-point data links. In these systems, the device can translate between a host controller's CMOS/TTL logic and the higher voltage swings required by an RS-232 cable connection. The three receiver channels are useful when a design must monitor several return or status signals without adding separate receiver packages.
PCB layout should preserve the device's intended package geometry, route each RS-232 line directly to its connector or protection network, and provide a stable low-impedance ground path. Because line-driver outputs and receiver inputs perform different functions, verify every connection against the manufacturer's pin-description table before final routing. Cable protection, chassis grounding, and transient-suppression components should be selected according to the connector exposure and required industrial immunity level.
This product record combines the ADM207EAR's core electrical characteristics with practical interface-design guidance, pin-assignment cautions, application analysis, and same-footprint replacement information. It is intended to help engineers distinguish channel-count, package, and RS-232 functionality differences before making a PCB-compatible sourcing decision.
Pilihan pengganti yang segera untuk ADM207EAR — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
ADM207EARZ
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
ST207EBDR
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
ADM207EAR Spesifikasi
| Product Type | RS-232 transceiver |
| Driver Count | 5 channels |
| Receiver Count | 3 channels |
| Tegangan Pemberi Arus | 5 V |
| Maximum Data Rate | 230 kbps |
| Interface Standard | EIA-232E and CCITT V.28 |
| ESD Protection | ±15 kV |
| Kemasan | 24-lead SOIC |
| Kiraan Pin | 24 pins |
| Jenis Pemasangan | Surface mount |
| Number of Transmitters | 5 |
| Number of Receivers | 3 |
Panduan Konfigurasi Pin ADM207EAR 24-lead soic
Konfigurasi pin untuk ADM207EAR (24-lead 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 ADM207EAR.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
ADM207EAR patut untuk 6 aplikasis: Industrial Serial Controller, Test and Measurement Equipment, Computer Peripherals, Data Acquisition Equipment, Remote Control Systems, Legacy Communication Bridge.
Industrial Serial Controller
The ADM207EAR fits industrial serial controllers that must translate controller logic into EIA-232E line levels while monitoring multiple return signals. Its five driver channels support up to five outbound RS-232 signals, and its three receiver channels can handle three inbound or status lines in one 24-lead SOIC device. Operation from a single 5 V rail simplifies system power architecture compared with a dual-supply RS-232 implementation. The listed 230 kbps capability is suitable for conventional control and status traffic rather than high-speed differential buses. Designers should implement a continuous signal-ground path, apply connector-side surge protection where required, and verify that every driver output and receiver input is assigned to the correct 24-lead pin before fabrication.
Disebarkan
Test and Measurement Equipment
The ADM207EAR is useful in test and measurement equipment that communicates over RS-232 with older instruments, fixtures, or service computers. The five transmitters can support several output channels while three receivers provide monitoring inputs for acknowledgements, status lines, or remote commands. Its EIA-232E and CCITT V.28 conformance establishes compatibility with standard RS-232 communication rules, while the single 5 V supply simplifies integration into portable and benchtop systems. The ±15 kV ESD rating improves robustness when users connect and disconnect external cables. Keep the RS-232 ground adjacent to the signal conductors where the cable permits, use low-ESR bypass capacitors at the device, and select external protection that does not distort intended receiver thresholds.
Disebarkan
Computer Peripherals
The ADM207EAR can support legacy computer peripherals and service interfaces that require several RS-232 outputs but fewer inputs. A five-driver, three-receiver arrangement is particularly useful in multi-port equipment where separate point-to-point cables carry commands, data, resets, and status signals. The maximum 230 kbps data rate covers the classic RS-232 performance range, and operation from a single 5 V rail aligns with established computer-interface electronics. Because RS-232 is point-to-point rather than a multi-drop bus, each transmitter should drive one receiver and each cable should include a signal-ground reference. Validate cable length and baud rate against the system specification, and avoid using the additional driver channels unless each output has a defined receiver endpoint.
Disebarkan
Data Acquisition Equipment
The ADM207EAR fits data-acquisition equipment that must exchange commands and status with a host while keeping multiple control lines independent. Its three receiver channels can acquire acknowledgment, ready, or fault indications, while five drivers can provide separate control outputs to external fixtures. The 230 kbps maximum data rate is appropriate for many instrumentation protocols, and the 5 V single-supply operation simplifies analog and digital power partitioning. Place the transceiver near the external connector to minimize the length of unprotected cable-side traces, but keep noisy power-converter routing away from receiver inputs. Use a common signal-ground strategy and install protection networks at connectors exposed to industrial transients, checking that their capacitance and standby current remain compatible with the communication requirements.
Disebarkan
Remote Control Systems
The ADM207EAR can serve remote-control systems that distribute commands over separate RS-232 lines and receive multiple acknowledgements or safety-status inputs. The 5/3 channel organization allows a controller to support several unidirectional command paths without duplicating identical transceivers, while preserving a 230 kbps operating ceiling. Single 5 V operation is convenient for distributed control modules, and the family-level ESD protection helps manage electrostatic discharge encountered at external connectors. Treat each RS-232 transmitter as a dedicated point-to-point output rather than a bus driver. Confirm wire mapping, ground references, cable length, and connector shielding against the equipment installation guide, and use the manufacturer's pin table to prevent conflicts between driver outputs, receiver inputs, and control functions.
Disebarkan
Legacy Communication Bridge
The ADM207EAR is appropriate for communication bridges that connect a modern controller to legacy RS-232 equipment. Multiple driver outputs can carry separate command or data paths, while three receiver inputs support acknowledgements and status from the legacy device. Its conformance to EIA-232E and CCITT V.28 supports standard RS-232 signaling, and the 24-lead SOIC package keeps the interface compact on a mixed-signal control board. The listed ±15 kV ESD protection adds robustness where cables are repeatedly connected, although it does not replace coordinated surge protection. Design a solid ground reference between the two systems, maintain consistent logic levels on the bridge side, and avoid excessive capacitive loading on the long RS-232 lines.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk ADM207EAR — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | ADM207EARZ | ST207EBDR |
|---|---|---|---|
| Package | 24-lead SOIC | 24-lead SOIC - same package | 24-pin SOIC - same package |
| Brand | Analog Devices | Analog Devices | STMicroelectronics |
| Product Type | RS-232 transceiver | RS-232 transceiver | RS-232 interface transceiver |
Penyeberangsung Jelas
- Five transmit channels in a single interface IC (vsST207EBDR)
- Documented EIA-232E and V.28 conformance (vsST207EBDR)
- Same-family ordering option with a 100% documented rating match (vsADM207EARZ)
Catatan Desain
Place the ADM207EAR close to the external RS-232 connector when practical, and route each driver output or receiver input directly to the associated protection component and connector pin. This minimizes the length of unprotected cable-side traces and reduces susceptibility to radiated or induced interference. Keep the 24-lead SOIC land pattern consistent with the manufacturer package drawing, maintain adequate spacing between adjacent nets, and connect the device ground to the interface ground through a short, low-impedance path.
Do not treat the five driver outputs as a multi-drop bus and do not connect multiple transmitters to one receiver without confirming the complete signal topology. RS-232 is primarily a point-to-point interface, and driver outputs are not intended for wired-OR operation. Assign every channel by direction and signal name using the manufacturer's numbered pin-description table. Also check that the 5 V supply remains within the device's operating limits and that unused outputs are handled exactly as directed by the datasheet.
Use a defined chassis or signal-ground strategy at the RS-232 connector, especially when the interface leaves the equipment through a long cable. Keep the ground conductor adjacent to signal conductors where cable construction permits, and keep switching-converter currents and high-speed digital traces away from receiver inputs. Add external transient-protection components only after checking their standoff voltage, capacitance, clamping level, and leakage because unsuitable protection devices can impair RS-232 signaling.
Place the required local bypass capacitors at the ADM207EAR supply and ground pins, using short traces and a low-impedance ground return. The family operates from a single 5 V supply, so stable decoupling is important for maintaining correct driver voltage levels and receiver thresholds. Confirm the required capacitor value, voltage rating, dielectric type, and temperature range from the manufacturer electrical-characteristics and application guidance before releasing the PCB design.
Maklumat Kesediaan
The ADM207E family documentation identifies EMI/EMC compliance and ±15 kV ESD protection, but separate RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations are not established in the cited product records.
