MC1489PG - Quad EIA-232D Receiver | onsemi | 14-PDIP
料号： MC1489PG ✓ 量产中MC1489PG 概述
An EIA-232D line receiver is an interface IC that converts bipolar RS-232 signal levels into logic-compatible signals for digital equipment. The receiver belongs to the RS-232 interface hierarchy, where transceivers combine receive and transmit functions and line drivers provide the complementary output stage. A quad receiver integrates four independent channels in one package, reducing component count and simplifying parallel serial-interface designs.
The MC1489PG provides four EIA-232D receivers, an input resistance specified from 3.0 kΩ to 7.0 kΩ, and a 14-pin PDIP package. Each channel includes a response-control function in the device family architecture, allowing the receiver to be enabled or disabled according to the surrounding interface design. The through-hole package also makes the device suitable for legacy industrial, telecommunications, instrumentation, and control systems where plated-through-hole assembly remains common.
The monolithic construction places four receiver sections on one semiconductor device and standardizes the electrical interface for EIA-232D equipment. Input impedance limits the loading applied to the connected RS-232 source, while the receiver threshold determines whether a differential line voltage is interpreted as a valid logic state. Designers should use the manufacturer datasheet pin-description table and operating-limit tables when assigning inputs, response-control terminals, supply connections, and ground returns.
Typical uses include multi-channel RS-232 data acquisition, industrial console links, equipment-control interfaces, legacy serial adapters, and embedded systems that communicate with older peripherals. The four-channel arrangement is especially useful when a system exchanges several independent RS-232 signals or requires a receive-only interface alongside a separate line-driver device.
When laying out the PCB, route the four receiver inputs away from switching nodes and place interface protection close to connector entries. Confirm the receiver enable state during reset, keep ground returns short, and test every unused channel for a defined logic level. The DIP footprint simplifies through-hole assembly, but the 7.62 mm pin pitch still requires adequate spacing for soldering and connector routing.
This product page combines the verified MC1489PG identification, package information, EIA-232D function, receiver count, input-resistance range, source links, and technically constrained replacement analysis to support component selection, board review, sourcing, and design-in decisions.
直接替换替代料： MC1489PG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC1489PG （相同外形与封装尺寸） ——差异在于 Input Resistance, Interface Standard, Mounting Type, Package, Input Hysteresis.
MC1489N
✅ 直接替换联系询价
查看数据手册 →MC1489AN
✅ 直接替换联系询价
查看数据手册 →MC1489PG 规格参数
| Receiver Configuration | 4 independent receivers |
| Interface Standard | EIA-232D |
| Input Resistance | 3.0 kΩ to 7.0 kΩ |
| Package Type | 14-PDIP |
| Package Pitch | 0.300 in (7.62 mm) |
| 安装类型 | Through-hole |
| 引脚数 | 14 pins |
| Response Control Function | Separate response-control terminal per receiver |
| Manufacturer | onsemi |
MC1489PG 引脚配置
| 引脚 1 | OUT1 — Receiver 1 output |
| 引脚 2 | OUT2 — Receiver 2 output |
| 引脚 3 | OUT3 — Receiver 3 output |
| 引脚 4 | OUT4 — Receiver 4 output |
| 引脚 5 | CONT1 — Receiver 1 response control |
| 引脚 6 | CONT2 — Receiver 2 response control |
| 引脚 7 | CONT3 — Receiver 3 response control |
| 引脚 8 | CONT4 — Receiver 4 response control |
| 引脚 9 | IN4 — Receiver 4 input |
| 引脚 10 | IN3 — Receiver 3 input |
| 引脚 11 | IN2 — Receiver 2 input |
| 引脚 12 | IN1 — Receiver 1 input |
| 引脚 13 | GND — Ground connection |
| 引脚 14 | VCC — Positive supply connection |
典型应用
MC1489PG 适用于 6 应用s: Industrial RS-232 Data Acquisition, Legacy Equipment Console Interface, Multiport Serial Control Interface, Instrumentation and Test Equipment, Telecommunications Equipment Interface, Retrofit and Repair Interface Board.
Industrial RS-232 Data Acquisition
The MC1489PG fits industrial acquisition equipment that receives four EIA-232D control or status signals. Its four integrated receiver channels reduce the number of packages required for a multi-signal interface, while the 3.0 kΩ to 7.0 kΩ input resistance helps control loading on the connected RS-232 source. The 14-pin PDIP format supports through-hole assembly on legacy measurement and process-control boards. Place protection networks at the connector, keep signal traces away from switching circuitry, and define the state of each response-control terminal during startup.
推荐
Legacy Equipment Console Interface
The MC1489PG can receive up to four EIA-232D lines from a legacy console or service port in industrial equipment. Consolidating four receivers into one package simplifies board population and provides consistent logic-side interfacing across multiple status signals. Its 0.300-inch, 7.62 mm PDIP geometry suits replacement and repair boards that already use through-hole connectors. Verify the actual connector pinout and logic polarity before wiring, because a physically similar receiver may interpret thresholds or response-control commands differently.
推荐
Multiport Serial Control Interface
The MC1489PG is appropriate for equipment with several incoming serial-control channels that must be presented to a controller as digital signals. Four EIA-232D receivers in one 14-PDIP package reduce wiring complexity and board count compared with four separate single-channel devices. The defined 3.0 kΩ to 7.0 kΩ input-resistance range should be included in signal-integrity and termination checks. Firmware must also establish whether each response-control terminal remains active continuously or is used for channel gating.
推荐
Instrumentation and Test Equipment
The MC1489PG can serve as the receive section of legacy instrumentation controlled over an EIA-232D port. Four channels are useful for status, alarm, trigger, or acknowledge signals accompanying a measurement command. Its through-hole package is especially convenient for repairable laboratory and industrial test equipment that uses a 0.300-inch DIP footprint. Keep the analog and power sections of the instrument physically separated from the RS-232 input routing, and validate the receiver threshold and enable state with the actual test-equipment driver.
推荐
Telecommunications Equipment Interface
The MC1489PG supports legacy telecommunications and network-support equipment that uses EIA-232D control lines in addition to a primary communication path. Four receiver channels can carry alarm, status, or supervisory information into control logic. The device's four-channel integration and 14-pin PDIP construction suit established through-hole hardware. Review grounding and surge requirements for the installation environment, and use the manufacturer electrical limits to confirm that the receiver remains appropriate for the protected signal levels reaching its input terminals.
推荐
Retrofit and Repair Interface Board
The MC1489PG is particularly useful for a retrofit board designed to recover EIA-232D control connections from discontinued equipment. A 14-pin DIP receiver board can bridge existing serial wiring to modern logic while avoiding a redesign of the original main PCB. Its 0.300-inch pitch matches established through-hole interface layouts, and the four receiver channels cover common alarm and status connections. Before assembly, compare every PCB net with the manufacturer pin-description diagram and avoid substituting solely by package appearance.
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推荐产品汇总
工程参考数据： MC1489PG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MC1489N | MC1489AN | MC1489D | SN75189N |
|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | onsemi | Texas Instruments |
| Package | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP |
| Receiver Configuration | 4 independent receivers | 4 receivers | 4 receivers | 4 receivers | 4 receivers |
| Pin Count | 14 pins | 14 pins | 14 pins | 14 pins | 14 pins |
关键差异点
- Four integrated EIA-232D receiver channels （对比 SN75189N)
- Direct onsemi family continuity for existing MC1489 designs （对比 MC1489D)
- Documented response-control architecture （对比 MC1489AN)
设计说明
Place the MC1489PG close enough to the RS-232 connector that protection components can clamp transients before the signal reaches the receiver inputs. Route the four input nets away from clocks, switching power nodes, relay contacts, and high-current return paths. Use a continuous ground reference, connect the package ground pin to the interface ground plane, and verify that the 14-pin DIP footprint uses the standard 0.300-inch, 7.62 mm lead spacing.
Do not assume that a 14-pin quad receiver is automatically interchangeable. Compare the pin description, response-control polarity, receiver threshold, supply-voltage range, and electrical limits between the fitted device and the proposed replacement. In particular, EIA-232D and TIA/EIA-232-F are closely related interfaces, but threshold and control details must still be checked. Mark unused receiver outputs and control inputs so they cannot enter an indeterminate state.
Account for the MC1489PG's 3.0 kΩ to 7.0 kΩ input resistance when evaluating source loading, termination, and protection-component values. Keep connector-side protection low-capacitance and confirm that its leakage does not disturb the receiver threshold. If the interface must operate next to switching supplies, isolate the connector and logic ground appropriately and validate the complete receiver path with an EIA-232D-compatible source.
合规信息
Compliance status was not stated in the manufacturer or distributor listing information for this exact MPN. Confirm the current declarations with onsemi using the Request a Quote form on this page.
