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?? HC148器件具有输入的优先级解码功能,可确保只编码最高阶数据线。这些器件将8条数据线编码为3线(4-2-1)二进制(八进制)。提供级联电路(使能输入EI和使能输出EO)以允许八进制扩展而无需外部电路。数据输入和输出在低逻辑电平下有效。
Function |
Technology Family |
VCC (Min) (V) |
VCC (Max) (V) |
Channels (#) |
Voltage (Nom) (V) |
F @ Nom Voltage (Max) (Mhz) |
ICC @ Nom Voltage (Max) (mA) |
tpd @ Nom Voltage (Max) (ns) |
Configuration |
Type |
IOL (Max) (mA) |
IOH (Max) (mA) |
Rating |
Operating Temperature Range (C) |
Package Group |
Package Size: mm2:W x L (PKG) |
Bits (#) |
Digital input leakage (Max) (uA) |
ESD Charged Device Model (kV) |
ESD HBM (kV) |
SN74HC148 | SN54HC148 |
---|---|
Encoder Multiplexer | Encoder/Multiplexer |
HC | HC |
2 | 2 |
6 | 6 |
1 | 1 |
3.3 5 | 3.3 5 |
28 | 28 |
0.08 | 0.08 |
49 | 49 |
8:3 | 8:3 |
Standard | Standard |
5.2 | 5.2/-5.2 |
-5.2 | |
Catalog | Military |
-40 to 85 | -55 to 125 |
PDIP SO SOIC | CDIP LCCC |
See datasheet (PDIP) 16SO: 80 mm2: 7.8 x 10.2(SO) 16SOIC: 59 mm2: 6 x 9.9(SOIC) | See datasheet (CDIP) 20LCCC: 79 mm2: 8.89 x 8.89(LCCC) |
8 | 8 |
5 | 5 |
0.75 | 0.75 |
2 | 2 |
无样片 |