SN74HC21-Q1 vs SN74HC21DR 对比
详细并排对比 SN74HC21-Q1 出自 Texas Instruments 和 SN74HC21DR 出自 Texas Instruments。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
规格对比
| 参数 | SN74HC21-Q1 | SN74HC21DR |
|---|---|---|
| 品牌 | Texas Instruments | Texas Instruments |
| 分类 | Logic ICs | Logic ICs |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.16 | $0.14 |
| Logic Function | Dual 4-Input Positive-AND Gate | Dual 4-Input Positive-AND Gate |
| Logic Family | HC (High-Speed CMOS) | 74HC (High-Speed CMOS) |
| Number of Channels | 2 | 2 |
| Inputs per Gate | 4 | 4 |
| Supply Voltage Range | 2 V to 6 V | 2 V to 6 V |
| Output Drive Strength | 5.2 mA | 5.2 mA |
| Output Drive at 5 V | ±4 mA | ±4 mA |
| Typical Propagation Delay | 11 ns at 5 V | 11 ns at 5 V |
| Max Input Current | 1 uA | — |
| Max Quiescent Supply Current | 20 uA | — |
| LSTTL Load Drive | Up to 10 LSTTL loads | Up to 10 LSTTL loads |
| Boolean Function | Y = A • B • C • D (positive logic) | — |
| Qualification | AEC-Q100 Automotive Catalog | — |
| 封装 | SOIC-14 (D) | SOIC (D), 14 pins |
| 安装类型 | Surface Mount | Surface Mount |
| RoHS 状态 | Compliant | Compliant |
| Maximum ICC | — | 20 uA |
| Maximum Input Current | — | 1 uA |
| 工作温度 | — | -40C to +85C |
| Technology | — | CMOS with input clamp diodes |