CD4502BE - 6-Channel 3-18V CMOS Inverting Buffer | Texas Instruments
MPN： CD4502BE ✓ 啟用中CD4502BE 概覽
A CMOS buffer is a digital logic device that strengthens or isolates signals traveling between circuit sections. A hex inverter contains six independent inverter channels, while a three-state output can be driven low, driven high, or placed in a high-impedance state. The CD4502BE therefore belongs to the CMOS logic family within the broader digital IC and logic-level interface hierarchy.
Key verified features include six inverting channels, push-pull output behavior, a strobed operating mode, common output disable, and operation from 3 V to 18 V. Its output-disable input places all six outputs in the high-impedance state when driven by a logic 1. The device is specifically identified as a CMOS strobed hex inverter/buffer suitable for interfacing integrated circuits with data buses.
The verified noise-margin figures are 1 V at a 5 V supply, 2 V at 10 V, and 2.5 V at 15 V. These values help quantify the input-level margin available between CMOS stages across the stated supply conditions. The device also meets the requirements identified in the provided source as JEDEC Tentative Standard No. 13B for B-series CMOS devices.
Typical applications include CMOS-to-TTL hexadecimal buffering, tri-state data-bus interfacing, level translation between compatible logic families, and systems that require a shared strobe or output-disable function. The inverting architecture must be considered in systems where signal polarity affects downstream interpretation.
When designing around the CD4502BE, keep unused inputs in a defined logic state and account for the three-state output behavior during bus contention and disable transitions. The 16-pin PDIP package also requires adequate lead clearance during assembly and appropriate handling in production workflows.
This page combines verified manufacturer and distributor information with pin-compatible alternatives, parameter comparisons, pricing context, and practical integration guidance. It distinguishes published characteristics from unavailable details instead of estimating unverified electrical values.
直接替換替代品，適用於 CD4502BE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
CD4502BM
✅ 直接替換聯絡詢價
查看資料表 →CD4502BF3A
✅ 直接替換📋 參考替代品（不在目錄中）
SCL4502BE
✅ 直接替換📋 參考替代品（不在目錄中）
CD4502BE 最大額定值與電氣特性
| Product Type | CMOS strobed hex inverter/buffer with 3-state outputs |
| Number of Channels | 6 channels |
| Logic Level per Channel | 6 bits |
| 輸出類型 | Inverting, push-pull, 3-state |
| Supply Voltage Range | 3 V to 18 V |
| 封裝 | 16-pin PDIP |
| Package Pitch | 7.62 mm (0.300 inch) |
| Technology | CMOS |
| Output Disable Control | Logic 1 produces high-impedance state on all six outputs |
| Noise Margin at 5 V | 1 V |
| Noise Margin at 10 V | 2 V |
| Noise Margin at 15 V | 2.5 V |
| Applicable Logic Standard | JEDEC Tentative Standard No. 13B, B Series CMOS Devices |
| Primary Application | 3-state hex inverter for interfacing integrated circuits with data buses |
| Additional Interface Application | CMOS-to-TTL hex buffer |
| 安裝類型 | Through-hole PDIP |
| Lead Count | 16 leads |
CD4502BE 7.62 mm (0.300 inch) 腳位配置指南
CD4502BE（7.62 mm (0.300 inch) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： CD4502BE.
請參閱 資料表 以查看完整腳位配置。
典型應用
CD4502BE 適用於 6 應用s: CMOS-to-TTL Hex Buffering, Tri-State Data-Bus Interfacing, Bidirectional Control Signal Conditioning, Legacy Processor Bus Isolation, Industrial Logic Level Translation, Three-State Test and Control Panels.
CMOS-to-TTL Hex Buffering
The CD4502BE is suited to CMOS-to-TTL interface designs because the manufacturer identifies the device as a CMOS strobed hex inverter/buffer and explicitly lists CMOS-to-TTL hex buffering as an application. Its six inverting push-pull channels can isolate a source device from a destination bus while operating from 3 V to 18 V. At a 15 V supply, the verified full-package-temperature noise margin is 2.5 V, providing a substantially larger level margin than the 1 V stated at 5 V. Designers should verify voltage and current compatibility with the connected TTL family during implementation.
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Tri-State Data-Bus Interfacing
The CD4502BE fits tri-state data-bus interfacing because a logic 1 on its output-disable input places all six outputs in a high-impedance state. This common disable control allows a six-channel section to share a bus without driving it continuously, while the strobed operation coordinates when the inverted channel data is presented. According to the verified manufacturer description, the device is intended for integrated-circuit-to-data-bus interfaces. System designers must ensure that no two enabled drivers contend and that disabled outputs are properly pulled or managed when the bus lacks another valid driver.
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Bidirectional Control Signal Conditioning
The six inverting channels of the CD4502BE can condition digital control or status signals that require inverted logic and controlled bus participation. Its verified 3 V to 18 V supply range allows use across nominal 5 V and 15 V CMOS systems, while the published noise margins of 1 V at 5 V, 2 V at 10 V, and 2.5 V at 15 V help quantify the available logic-level margin. The shared strobe and output-disable controls support grouped signal management. Engineers should confirm every connected input remains in a defined state when it is not intentionally driven.
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Legacy Processor Bus Isolation
The CD4502BE can isolate a group of six legacy processor or peripheral signals from a shared bus using its three-state outputs and common disable input. This is useful where multiple subsystems must connect to the same bus but only one should drive it at a time. According to the verified Texas Instruments description, the device is a CMOS strobed hex inverter/buffer specifically positioned for integrated-circuit and data-bus interfacing. The design must account for the inverting output function and include suitable pull-up or pull-down arrangements wherever a disabled bus can float.
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Industrial Logic Level Translation
The CD4502BE can support industrial logic interfacing where a system operates with CMOS signals and needs buffered, selectable bus participation. Its 3 V to 18 V operating range provides flexibility for 5 V and 15 V logic environments, and the inverting channels can accommodate systems designed around inverted control conventions. The verified noise-margin figures show a direct relationship between supply voltage and available logic margin: 1 V at 5 V, 2 V at 10 V, and 2.5 V at 15 V. Industrial implementation should additionally verify temperature limits, propagation timing, and output loading, which were not supplied in the verified data.
推薦
Three-State Test and Control Panels
A CD4502BE can be used in test and control-panel logic where six lines must be inverted and disconnected from a common interface during selected operating modes. The common output-disable input simplifies coordinated isolation, while the 16-pin PDIP package supports conventional through-hole assembly and prototype rework. According to the verified manufacturer description, the outputs support three-state operation and the device is intended for data-bus interfacing. A practical design must avoid enabling two push-pull drivers onto the same node and should provide defined bus levels when every associated buffer is disabled.
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推薦產品摘要
工程參考資料，適用於 CD4502BE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | CD4502BM | CD4502BF3A | SCL4502BE |
|---|---|---|---|---|
| Package | 16-pin PDIP | 16-pin DIP | 16-pin hermetic DIP | 16-pin DIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | 6-channel strobed inverting buffer with 3-state outputs | CD4502B-family hex inverter/buffer | CD4502B-family hex inverter/buffer | CD4502-family inverter/buffer |
| Logic Family | CD4502B CMOS | CD4502B CMOS | CD4502B CMOS | CD4502 CMOS |
主要差異化特點
- Common control for all six three-state outputs (對比CD4502BM)
- Wide CMOS supply range (對比CD4502BF3A)
- Documented noise margin across common CMOS supplies (對比SCL4502BE)
設計說明
Do not allow more than one push-pull driver to control the same bus node simultaneously. The CD4502BE output-disable input provides a common high-impedance state for all six outputs when driven high, but bus contention can still occur if another enabled device drives the same net. Define the enable hierarchy and ensure that disabled outputs are not left floating where the system requires a valid logic level.
Account for the inverted channel function throughout the system rather than treating the device as a non-inverting buffer. The verified manufacturer description identifies six inverting channels, while the output-disable input can place every channel in a high-impedance state. A logic probe should confirm output polarity, disable timing, and bus ownership before the board is released to production.
Place the CD4502BE with adequate clearance for the 16-lead PDIP footprint and route connected data-bus lines away from sensitive analog or high-speed clock nets. Because the verified data does not provide complete propagation-delay or output-loading curves, avoid assuming ideal switching behavior. Keep bus traces short enough to limit distributed capacitance and verify timing with the actual load and source-device parameters.
合規資訊
The verified source references JEDEC Tentative Standard No. 13B for B-series CMOS devices, but it does not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is not applicable because this is a logic IC rather than an automotive-qualified device in the supplied data.