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ECS-3951C/3953C SERIES
SMD CLOCK OSCILLATOR
The ECS-3951C (5V) and ECS-3953C (3.3V) Series are miniature, crystal controlled, low current clock oscillator in a ceramic SMD package. The low profile package is ideal for today's advanced portable PC and instrumentation designs.
FEATURES
* 3.3 or 5.0V version * Miniature profile * Low power consumption * Standby function * Tape & Reel (1,000 pcs)
PART NUMBERING GUIDE
ECS-3951C - FREQUENCY (50.0 MHz) 500 - STABILITY TOLERANCE (50 PPM) B
Sample Part Number: ECS-3951C-500-B
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS FREQUENCY RANGE TEMPERATURE RANGE SUPPLY VOLTAGE FREQUENCY STABILITY** Standard Option (B) Option (C) 1.8 ~ 30.0 MHz 30.0 ~ 35.0 MHz 35.0 ~ 50.0 MHz 50.0 ~ 66.0 MHz 66.0 ~ 80.0 MHz @ 1/2 VCC Level VCC x 0.1V max. VCC x 0.9V min. HCMOS 1.8 ~ 36.0 MHz 36.0 ~ 80.0 MHz VOL=0.5V/0.33 VOH=4.5V/2.97V Operating Storage CONDITIONS MIN 1.800 0 -55 +4.5 -100 -50 -25 ECS-3951C (5V) TYP MAX 80.000 +70 +125 +5.5 +100 +50 +25 10 15 30 30 50 60/40 10 MIN 1.800 0 -55 +3.0 -100 -50 -25 ECS-3953C (3.3V)* TYP MAX 80.000 +70 +125 +3.6 +100 +50 +25 8 8 12 15 30 60/40 15 UNITS MHz C C V DC PPM PPM PPM mA mA mA mA mA % ns
+5.0 40
+3.3 40
INPUT CURRENT OUTPUT SYMMETRY RISE AND FALL TIMES LOGIC "0" LEVEL LOGIC "1" LEVEL LOAD START-UP TIME OUTPUT CURRENT (IOL) (IOH)
40/60
50 4
40/60
50 4
ENABLE/DISABLE TIME
* ECS-3953C is also compatible with a supply voltage of +3.0V DC 0.3V ** Inclusive of 25C tolerance, operating temperature range, input voltage change, load change, aging shock and vibration. *** An internal pullup resistor from pin 1 to 4 allows active output if pin 1 is left open. Note: A 0.01 F bypass capacitor should be placed between VCC (Pin 4) and GND (Pin 2) to minimize power line noise.
15 5 10 4 -4 100
15 5 10 4 -4 100
pF ms ms mA mA ns
PACKAGE DIMENSIONS (mm)
0.10
PIN CONNECTIONS #1 TRI-STATE*** #2 GND #3 OUTPUT #4 VCC
2.00
4
5.08
1.60 0.15
3 1 2
1.40
1.40
5.00 0.2
0.01F 5.08
ECS-3951C/3953C Standby Control Voltage PIN #1 = OPEN *** #3 = OSCILLATION #3 = OSCILLATION PIN #1 = VCCx0.9 MIN PIN #1 = VCCx0.1 MAX #3 = HIGH IMPEDANCE
2.54
7.5 0.2
1 2
4
3
1.00
4.20
Figure 1) ECS-3951C/3953C Top, Side and Bottom views
Figure 2) Land Pattern
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 * 913-782-7787 * 800-237-1041 * FAX 913-782-6991 * WWW.ECSXTAL.COM SMD OSCILLATORS 42 SMD OSCILLATORS

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Price & Availability of ECS-3953C

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-800-TR XC728CT-ND	ECS International Inc	XTAL OSC XO 80.0000MHZ HCMOS SMD	1000: USD2.1 1: USD2.28	1326
ECS-3953C-666-TR XC727CT-ND	ECS International Inc	XTAL OSC XO 66.6660MHZ HCMOS SMD	1: USD2.28	332

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-200-TR ECS-3953C-200-TR	ECS International Inc	Clock Oscillator 20MHz 3.3V 15pF 4-Pin SMD T/R - Tape and Reel (Alt: ECS-3953C-200-TR)		0
ECS-3953C-400-TR ECS-3953C-400-TR	ECS International Inc	Clock Oscillator 40MHz 3.3V 15pF 4-Pin SMD T/R - Tape and Reel (Alt: ECS-3953C-400-TR)		0
ECS-3953C-800-TR ECS-3953C-800-TR	ECS International Inc	Clock Oscillator 80MHz 3.3V 15pF 4-Pin SMD T/R - Tape and Reel (Alt: ECS-3953C-800-TR)		0
ECS-3953C-245.7-TR ECS-3953C-245.7-TR	ECS International Inc	SMD Clock Oscillator 24.57MHz 3.3V 15pF 4-Pin Miniature CSMD T/R - Tape and Reel (Alt: ECS-3953C-245.7-TR)		0
ECS-3953C-240-TR ECS-3953C-240-TR	ECS International Inc	Clock Oscillator 24MHz 3.3V 15pF 4-Pin SMD T/R - Tape and Reel (Alt: ECS-3953C-240-TR)		0

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-320-TR	ECS International Inc		150: USD8.2 113: USD8.36 75: USD9 38: USD11.84 25: USD12.02 10: USD12.21 5: USD12.39	850

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-320-TR 67514758	ECS	Oscillator XO 32MHz ±100ppm 15pF HCMOS 60% 3.3V 4-Pin Mini-CSMD T/R	75: USD11.7 5: USD15.6	850

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS3953C800	ECS International Inc			1324
ECS-3953C-400-TR	ECS		165: USD2.7552 81: USD2.9118 39: USD3.1362 13: USD3.36 5: USD4.368 1: USD6.72	504
ECS-3953C-800-TR	ECS International Inc			1324
ECS-3953C-80MHZ	ECS International Inc			395
ECS3953C-320B	ECS International Inc			523

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-25.00 MHZ	New Japan Radio Co Ltd		38: USD129.1981 15: USD133.3658 1: USD166.7072	56
ECS-3953C-250-TR	ECS International Inc	OSCILLATOR, 1MHZ MIN, 125MHZ MAX, 25MHZ NOM	6: USD3.75 2: USD5 1: USD7.5	10
ECS-3953C-320-TR	ECS International Inc	CRYSTAL OSCILLATOR, CLOCK, 32 MHZ, HCMOS OUTPUT, SMD, 4 PIN	739: USD2.4638 330: USD2.7101 1: USD4.9275	1600
ECS-3953C-400-TR	ECS International Inc	OSCILLATOR, 1MHZ MIN, 125MHZ MAX, 40MHZ NOM	64: USD3.6523 18: USD3.9484 1: USD5.9226	142
ECS-3953C-400-TR	ECS	OSCILLATOR, 1MHZ MIN, 125MHZ MAX, 40MHZ NOM	120: USD3.9 45: USD4.2 1: USD9	403

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-250-B-TR OR EQUIVALENT SMC-ECS-3953C-250-B-TR OR EQUIVALENT	ECS International Inc	AS6081 Certified Vendor, 1 Yr Warranty		5249

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECS-3953C-320-TR	ECS International Inc		150: USD8.2 113: USD8.36 75: USD9 38: USD11.84 25: USD12.02 10: USD12.21 5: USD12.39	850

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