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參數(shù)資料
| 型號(hào)： | 74221 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High Speed CMOS Logic Dual Monostable Multivibrator with Reset |
| 中文描述： | 高速CMOS邏輯雙單穩(wěn)態(tài)觸發(fā)器的復(fù)位 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大?。?/td> | 250K |
| 代理商： | 74221 |
December 1990
4
Philips Semiconductors
Product specification
Dual non-retriggerable monostable
multivibrator with reset
74HC/HCT221
Fig.4 Functional diagram.
FUNCTION TABLE
Notes
1.
H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑
= LOW-to-HIGH level
↓
= HIGH-to-LOW level
= one HIGH-level output pulse
= one LOW-level output pulse
If the monostable was triggered before this condition
was established the pulse will continue as
programmed.
For this combination the reset input must be LOW and
the following sequence must be used:
pin 1 (or 9) must be set HIGH or pin 2 (or 10) set LOW;
then pin 1 (or 9) must be LOW and pin 2 (or 10) set
HIGH. Now the reset input goes from LOW-to-HIGH
and the device will be triggered.
2.
3.
INPUTS
OUTPUTS
nR
D
L
X
X
H
H
↑
nA
nB
nQ
nQ
X
H
X
L
↓
L
X
X
L
↑
H
H
L
L
(2)
L
(2)
H
H
(2)
H
(2)
(3)
(3)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74221-001 | 功能描述:板對(duì)板與夾層連接器 400 POS. MEG ARRAY RoHS:否 制造商:JAE Electronics 系列:WP3 產(chǎn)品類型:Receptacles 節(jié)距:0.4 mm 疊放高度:1 mm 安裝角: 位置/觸點(diǎn)數(shù)量:50 排數(shù):2 外殼材料:Plastic 觸點(diǎn)材料:Copper Alloy 觸點(diǎn)電鍍:Gold 電壓額定值:50 V 電流額定值:0.4 A |
| 74221-001LF | 功能描述:板對(duì)板與夾層連接器 400 POS. MEG ARRAY RoHS:否 制造商:JAE Electronics 系列:WP3 產(chǎn)品類型:Receptacles 節(jié)距:0.4 mm 疊放高度:1 mm 安裝角: 位置/觸點(diǎn)數(shù)量:50 排數(shù):2 外殼材料:Plastic 觸點(diǎn)材料:Copper Alloy 觸點(diǎn)電鍍:Gold 電壓額定值:50 V 電流額定值:0.4 A |
| 74221-002 | 制造商:FCI 功能描述:400pos 4.0MM HT REC ASSY |
| 74221-091 | 制造商:FCI 功能描述:MEG-ARRAY 制造商:FCI 功能描述:MEG ARRAY 400 POS RECPT 制造商:FCI 功能描述:MEG-ARRAY, 400 POS RECP,- 15 4MM, AU, CAP 制造商:FCI 功能描述:MEG-ARRAY, 400 POS RECP,- 4MM, 15 AU, CAP |
| 74221-091LF | 功能描述:400 Position Connector Array, Female Sockets Surface Mount Gold, GXT? 制造商:amphenol fci 系列:MEG-Array?，MezzSelect?? 包裝:帶卷（TR） 零件狀態(tài):有效 連接器類型:母插口陣列 針腳數(shù):400 間距:0.050"（1.27mm） 排數(shù):10 安裝類型:表面貼裝 特性:- 觸頭鍍層:金，GXT? 觸頭鍍層厚度:15μin（0.38μm） 接合堆疊高度:4mm，10mm 板上高度:0.132"（3.35mm） 標(biāo)準(zhǔn)包裝:250 |
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