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M74HC640M1R中文资料意法半导体数据手册PDF规格书
M74HC640M1R规格书详情
DESCRIPTION
The M54/74HC245, HC640 and HC643 utilise silicon gate C2MOS technology to achive operating speeds equivalent to LSTTL devices.
Along with the low power dissipation and high noise immunity of standards C2MOS integrated circuit, it possesses the capability to drive 15 LSTTL loads.
These IC’s are intended for two-way asynchronous communication between data buses, and the direction of data trasmission is determined by DIR input. The enable input (G) can be used to disable the device so that the buses are effectively isolated.
All input are equipped with protection circuits against staticdischarge and transient discharge and transient excess voltage.
IT IS PROHIBITED TO APPLY A SIGNAL TO A BUS TERMINAL WHEN IT IS IN OUTPUT MODE AND WHEN A BUS THERMINAL IS FLOATING (HIGH IMPEDANCE STATE), IT IS REQUESTED TO FIX THE INPUT LEVEL BY MEANS OF EXTERNAL PULL DOWN OR PULL UP RESISTOR.
■ HIGH SPEED
tPD = 10 ns (TYP.) at VCC = 5V
■ LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 oC
■ HIGH NOISE IMMUNITY
VNIH = VINL = 28 VCC (MIN.)
■ OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS
■ SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN)
■ BALANCED PROPAGATION DELAYS tPLH = tPHL
■ WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
■ PIN AND FUNCTION COMPATIBLE WITH 54/74LS245/640/643
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
SGS |
24+ |
DIP20 |
65200 |
一级代理/放心采购 |
询价 | ||
SGS |
2022+ |
DIP20 |
20000 |
只做原装进口现货.假一罚十 |
询价 | ||
ST |
2511 |
DIP20 |
16900 |
电子元器件采购降本 30%!盈慧通原厂直采,砍掉中间差价 |
询价 | ||
SGS |
24+ |
DIP20 |
9600 |
原装现货,优势供应,支持实单! |
询价 | ||
SGS |
23+ |
DIP |
13000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
询价 | ||
ST |
10+ |
DIP-24 |
7800 |
全新原装正品,现货销售 |
询价 | ||
ST |
23+ |
DIP20 |
16900 |
正规渠道,只有原装! |
询价 | ||
SGS |
2447 |
DIP20 |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 | ||
ST/意法 |
23+ |
DIP-24 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
SGS |
22+ |
DIP20 |
26883 |
原装正品现货 |
询价 |