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suppliers of SN74F30257DB and PDF data of SN74F30257DB

Part Numbert	Mfg	Packt	D/C	Descriptiont	Qty	Company/Contact
SN74F30257DB	TI	QSOP	95+		500	Tosion Technology Limited Contact:Linda Tel:852-3059-2111 (603) Fax:852-3059-2221 Email: sales1@tosion.hk
SN74F30257DB	TI				500	EVER SUCCESS INC.LIMITED Contact:Jenny Tel:86-755-83005767 Fax: Email: zcxyic@yahoo.cn
SN74F30257DB	TI	QSOP	95+		500	Hanson Electronics Co Ltd. Contact:han Tel:86-755-82818692 Fax: Email: sales@hanson-ic.com
SN74F30257DB	TI		95+		500	laige technology Contact:helen Tel:86-10-51987761 Fax: Email: laige-9@ic-key.com
SN74F30257DB	TI	QSOP	95		500	H.K. Shu Yang Electronic Co Contact:Hu Tel:86-755-83279520 Fax: Email: sales6@sy-ic.cn
SN74F30257DB	TI		09+	STOCK	3886	A-SI-KA ELEC Contact:CHEN Tel:86-21-58799780 Fax:86-21-58202118 Email: HEIDICHEN123@GMAIL.COM
SN74F30257DB	TI	QSOP	08+	全新热卖.特价销售	5860	ShenZhen Cheng Dao Technology .. Contact:Mr. Friday Tel:86-755-84741486 Fax:86-755-82866140 Email: 915063567@qq.com
SN74F30257DB	TI		95+		450	ARS Electronics Company Contact:Cody Zhang Tel:86-755-61627672 Fax:86-755-61627673 Email: cody@ars.net.cn
SN74F30257DB	TI		95		500	TEAMSOURCE(HK)LIMITED Contact:Ms.edithchen Tel:86-755-3306040233062656 Fax:86-755-33062657 Email: teamsource@163.com
SN74F30257DB	INSTOCK	95+	TI		500	EastAsiaResourceLtd Contact:Mr.HouFuzhen Tel:86-755-82533054 Fax:86-755-82533056 Email: johnson@xh-ic.com
SN74F30257DB	TI	__________	95+	全新	1501	XENTRONCOMPANYLIMITED Contact:Ms.LiliWan Tel:86-755-83041490 Fax:86-755-83013736 Email: xentrontech1@gmail.com
SN74F30257DB	TI	SSOP-30	07+/08+		10000	ShenzhenChongshengElectronicsC.. Contact:Mr.Jackies Tel:86-755-83031502 Fax:86-755-81614542 Email: chongxonexport@hotmail.com
SN74F30257DB	TI	QSOP	95+		500	GlitterElectronicscompany Contact:Ms.xujane Tel:86-755-83746600/83998955 Fax:86-755-83998977/83959478 Email: sales@glitter-ic.com
SN74F30257DB	TI		95		983	EMELECTRONICINTL.LTD. Contact:Ms.candychen Tel:86-755-82810220 Fax:86-755-82810359 Email: candychen@em-elect.com

SN74F30257DB Datasheet

Figure l illustrates a large transient at the input of a circuit protected by a unidirectional TVS diode. During the positive spike, the TVS diode junction is reversed biased. The device acts in avalanche mode as the transient current il flows. The spike is clamped at or below the maximum clamping voltage of the device. During the negative spike, the TVS diode junction is forward biased. The negative spike is clamped to one diode drop as the device conducts i2 in the forward direction.
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Inputs can be driven from either 3.3 V or 5 V devices. In 3-state operation, outputs can handle 5 V.This feature allows the use of these devices as translators in a mixed 3.3 V/5 V environment.
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Soldering and Defluxing: This module is designed for manual soldering. The leads must be soldered after the module is screwed onto the heat sink. The soldering temperature must be lower than 2600C for a maximum of 10 seconds, or lower than 3500C for a maximum of three seconds. Ethyl Alcohol is recommend for removing flux. Trichlorethylene solvents must not be used (they may cause bubbles in the coating of the transistor chips which can lift off the bond wires).

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