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suppliers of N7447B and PDF data of N7447B

Part Numbert	Mfg	Packt	D/C	Descriptiont	Qty	Company/Contact
N7447B	N/A	.	76		51	Liverpool (Hong Kong) Electron.. Contact:Jessica Tel:86-755-83957717 Fax: Email: info@lvphk.com
N7447B	N/A	.	76		51	ALLSKY(HONGKONG)ELECTRONICSCO. Contact:Jenny Jiang Tel:86-755-83014004 Fax:86-755-83014044 Email: info@allskyhk.com
N7447B			76+		76	Anichip International Ltd. Contact:Andrew Tel:86-755-25873776 Fax:86-755-25873736 Email: andrew@anichip.com
N7447B	76				76	Majestic Trading Contact:dena Tel:86-755-83002395 Fax: Email: carmen@mtc-ic.com
N7447B		DIP	07+	STOCK	500	ICINTERNATIONALTRADINGCo. Contact:Ms.jennifer Tel:86-754-84470653 Fax:86-754-86674846 Email: weisenda@21cn.com
N7447B	DIP	38503	N/A	MAILTOTALK	76	EuropeanUnionICIndustryCo. Contact:Ms.mikylin Tel:0086-0754-84479727 Fax:0086-0754-84470500 Email: dali11@qq.com

N7447B Datasheet

Pin numbers		Pin symbol	Input/output	Function
RTC-58321	RTC-58323	Pin symbol	Input/output	Function
1	5	CS2	Input	Chip select. When high, device can be accessed.
2	6	WRITE	Input	Set high to write.
3	7	READ	Input	Set high to read.
4 t0 7	8 t0 11	Do to D3	Both	Address/data bus.
8	12	GND		Negative power supply.
9	13	ADDRESS WRITE	Input	Address latch. Set high to latch address from Do to D3.
10	14	BUSY	Output	1 Hz output pin.
11	15	STOP	Input	1 Hz on/off control pin. When high, the l Hz signal is disabled, and the counter stopped.
12	16	TEST	Input	Increment pin for the counter. Normally this pin should be fixed low.
13	17	CS1	Input	Connect to power down detection circuit. (Fix high if there is no power down detection circuit.) When CSi is low, chip cannot be accessed, regardless of state of CS2.
	1 t0 4	NC		Fix low.
14 t0 16	18 t0 24	VDD		Positive power supply (normally +5 V).

N7447B Price

Parameter	Symbol	Limits								Unit
		- 25		- 35		- 45		- 55
WrIte Cycle:		Min	Max	Min	Max	Min	Max	Min	Max
Write Cycle Time	twc	25		35		45		55		ns
Chp Select to End of Write	tCW	20		30		40		45		ns
Address Valid to End of Write	tAW	20		30		40		45		ns
Data to Write-Time Overlap	tDW	15		18		20		25		ns
Data Hold from Write Time	tDH	3		3		3		5		ns
Write Pulse Width	tWP	20		25		35		40		ns
Address Setup Time	tAS	O		O		0		O		ns
Write Recovery Time	tWR	O		O		O		O		ns
Output Active from End of Write	tOWl	5		5		5		5		ns
Write to Output in High Z	tWHZ1		10		15		15		20	ns

N7447B on stock

Non-Inverting Unity Gain Considerations Gains of +1VN are obtained by removing all resistive and capacitive connections between the inverting pins and ground on the CLC417 amplifiers. Too much capacitive coupling between the inverting pin and ground may cause stability problems. Minimize this capacitive coupling by removing the ground plane near the input and output pins. The response labeled open in Figure l is the result of the inverting pin left open and all capacitive coupling removed. A flatter response can be obtained by inserting a resistor between the inverting and non-inverting pins as shown in Figure 2. The two remaining plots in Figure l illustrate a 300l resistor and a short connected between pins 2 and 3 0f the CLC417.

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