SN74LS138 vs CD74HC138 比較
詳細並排比較 SN74LS138 由 Texas Instruments 與 CD74HC138 由 Texas Instruments. 比較關鍵規格、電氣參數、封裝、生命週期狀態、價格與供貨情況，以找出最符合您設計需求的元件。
規格比較
| 參數 | SN74LS138 | CD74HC138 |
|---|---|---|
| 品牌 | Texas Instruments | Texas Instruments |
| 類別 | Logic ICs | Logic ICs |
| 生命週期狀態 | 啟用中 | 啟用中 |
| 功能 | 3-line to 8-line Decoder/Demultiplexer | — |
| Logic Family | 74LS (Schottky-clamped TTL) | HC (High Speed CMOS) |
| 供應電壓 | 5 V (TTL levels) | — |
| Propagation Delay | 20 ns (typical) | [DATA_NEEDED: propagation delay at rated supply/load] |
| Outputs | 8 active-low (Y0-Y7) | 8 active-low (Y0-Y7) |
| Select Inputs | 3 (A, B, C) | 3 (A0, A1, A2) |
| Enable Inputs | 3 (G1 active-high, G2A/G2B active-low) | 3 (two active-low, one active-high) |
| Output Sink Current | 8 mA | — |
| Power Dissipation | 32 mW (typical) | — |
| 工作溫度 | 0C to +70C | [DATA_NEEDED: operating temperature range per suffix] |
| 封裝 | 16-PDIP (N) | 16-pin PDIP / SOIC (per ordering suffix) |
| Other Packages | SOIC (D), SOP (NS) | — |
| 安裝類型 | Through Hole (PDIP variant) | Through-Hole (PDIP variant) / Surface Mount (SOIC variant) |
| Technology | Bipolar TTL MSI | High-speed silicon-gate CMOS |
| RoHS 狀態 | [DATA_NEEDED: RoHS status] | Compliant |
| Applications | High-performance memory decoding, data routing | — |
| Logic Function | — | 3-to-8 Line Decoder/Demultiplexer, inverting outputs |
| Supply Voltage Range | — | 2 V to 6 V |
| 輸出類型 | — | Inverting (active-low) |
| 靜態電流 | — | [DATA_NEEDED: ICC quiescent current] |
| Input Logic Compatibility | — | CMOS (HC level) |
| Datasheet Document | — | SCHS147J (November 1998 - Revised November 2021) |
| Typical Use | — | Memory address decoding, data routing |