首頁>74HC-HCT257>規(guī)格書詳情
74HC-HCT257中文資料SYC數(shù)據(jù)手冊PDF規(guī)格書
| 廠商型號 |
74HC-HCT257 |
| 功能描述 | Quad 2-input multiplexer; 3-state |
| 文件大小 |
230.37 Kbytes |
| 頁面數(shù)量 |
17 頁 |
| 生產(chǎn)廠商 | SYC Electronica |
| 企業(yè)簡稱 |
SYC |
| 中文名稱 | SYC Electronica官網(wǎng) |
| 原廠標(biāo)識 |  |
| 數(shù)據(jù)手冊 | |
| 更新時(shí)間 | 2025-8-5 8:22:00 |
| 人工找貨 | 74HC-HCT257價(jià)格和庫存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
74HC-HCT257規(guī)格書詳情
General description
The 74HC257; 74HCT257 are high-speed Si-gate CMOS devices and are pin compatible
with Low-power Schottky TTL (LSTTL).
The 74HC257 and 74HCT257 have four identical 2-input multiplexers with 3-state outputs,
which select 4 bits of data from two sources and are controlled by a common data select
input (S).
The data inputs from source 0 (1I0 to 4I0) are selected when input S is LOW and the data
inputs from source 1 (1I1 to 4I1) are selected when S is HIGH. Data appears at the
outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs.
The 74HC257 and 74HCT257 are the logic implementation of a 4-pole, 2-position switch,
where the position of the switch is determined by the logic levels applied to S. The outputs
are forced to a high-impedance OFF-state when OE is HIGH.
The logic equations for the outputs are:
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
恩XP |
2020+ |
SOP-14 |
50 |
百分百原裝正品 真實(shí)公司現(xiàn)貨庫存 本公司只做原裝 可 |
詢價(jià) | ||
恩XP |
24+ |
NA/ |
7350 |
現(xiàn)貨供應(yīng),當(dāng)天可交貨!免費(fèi)送樣,原廠技術(shù)支持!!! |
詢價(jià) | ||
恩XP |
24+ |
NA/ |
8735 |
原廠直銷,現(xiàn)貨供應(yīng),賬期支持! |
詢價(jià) | ||
PHI |
2016+ |
SOP14 |
6528 |
只做進(jìn)口原裝現(xiàn)貨!假一賠十! |
詢價(jià) | ||
PHI |
24+/25+ |
607 |
原裝正品現(xiàn)貨庫存價(jià)優(yōu) |
詢價(jià) | |||
PHI |
25+ |
SOP14 |
3200 |
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售 |
詢價(jià) | ||
PHI |
17+ |
DIP |
9888 |
全新進(jìn)口原裝,現(xiàn)貨庫存 |
詢價(jià) | ||
TI/TEXAS |
23+ |
N/A |
8931 |
詢價(jià) | |||
N/A |
23+ |
NA |
15659 |
振宏微專業(yè)只做正品,假一罰百! |
詢價(jià) | ||
PHLP |
24+ |
2639 |
詢價(jià) |
