数据：
CD54/74HC374, CD54/74HCT374, CD54/74HC574, CD54/74HCT574 数据表 
?? HC374，?? HCT374，?? HC574和?? HCT574是八态D型触发器，具有三态输出和能够驱动15个LSTTL负载。八个边沿触发的触发器在时钟（CP）的低电平到高电平转换时将数据输入其寄存器。输出使能（OE）控制3态输出，与寄存器操作无关。当OE为高电平时，输出处于高阻态。 374和574的功能相同，仅在引脚排列方面有所不同。
V OL 1μA，V OH 从Harris Semiconductor获得的数据表
| Technology Family |
| VCC (Min) (V) |
| VCC (Max) (V) |
| Bits (#) |
| F @ Nom Voltage (Max) (Mhz) |
| ICC @ Nom Voltage (Max) (mA) |
| tpd @ Nom Voltage (Max) (ns) |
| Input Type |
| 3-State Output |
| IOL (Max) (mA) |
| Output Type |
| Rating |
| Operating Temperature Range (C) |
| Package Group |
| Package Size: mm2:W x L (PKG) |
| CD54HCT574 | CD74HCT574 | CD74HCT574-EP | CD74HCT574-Q1 |
|---|---|---|---|
| HCT | HCT | HCT | HCT |
| 4.5 | 4.5 | 4.5 | 4.5 |
| 5.5 | 5.5 | 5.5 | 5.5 |
| 8 | 8 | 8 | 8 |
| 25 | 25 | 25 | 25 |
| 0.08 | 0.08 | 0.08 | 0.08 |
| 41 | 41 | 41 | 41 |
| TTL | TTL | TTL | TTL |
| Yes | Yes | Yes | Yes |
| 6 | 6 | 6 | 6 |
| CMOS | CMOS | CMOS | CMOS |
| Military | Catalog | HiRel Enhanced Product | Automotive |
| -55 to 125 | -55 to 125 | -40 to 125 | -40 to 125 |
| CDIP | PDIP SOIC TSSOP | SOIC TSSOP | SOIC TSSOP |
| See datasheet (CDIP) | See datasheet (PDIP) 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) | 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) | 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) |
| 无样片 | 无样片 |
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