Datasheet SY100E310L Datasheet (Micrel)

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Micrel, Inc.

3.3V ECL/PECL
2:8 DIFFERENTIAL FANOUT BUFFER

FEATURES

■ Guaranteed AC performance over temperature and

voltage:

• > 800MHz f

• < 50ps within-device skew

■ Low voltage operation:

• LVPECL: +3.3V ±10%

• LVECL: –3.3V ±10%

■ Internal 75kΩ pull-down resistors

■ Guaranteed over industrial temperature range:

–40°C to +85°C

■ Pin-for-pin, plug-in replacement for MC100LVE310

■ Available in 28-pin PLCC package

MAX

(typical)

SY100E310L

SY100E310L

DESCRIPTION

The SY100E310L is a 3.3V, precision 2:8 ECL/PECL
fanout buffer optimized for precision low-skew clock
distribution. The SY100E310L features fully differential clock
paths to minimize both device and system skew resulting in
skew performance of < 50ps. In addition, the device includes
a 2:1 multiplexer input for redundant switchover applications.

The SY100E310L is optimized for low voltage +3.3V
LVPECL or –3.3V LVECL applications.

Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.

APPLICATIONS

■ Communications clock distribution

■ Redundant clock switchover

■ High-end server clock distribution

FUNCTIONAL BLOCK DIAGRAM

CLKA

/CLKA

CLKB

/CLKB

SEL

V

BB

Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
Q4
/Q4
Q5
/Q5
Q6
/Q6
Q7
/Q7

CROSS REFERENCE TABLE

Micrel Semiconductor On Semiconductor

SY100E310LJI MC100LVE310FN

SY100E310LJITR MC100LVE310FNR2

TYPICAL PERFORMANCE

Output Swing

900
800
700
600
500
400
300
200

Q AMPLITUDE (mV)

100

vs. Frequency

0

0

200

400

600

CLK FREQUENCY (MHz)

800

1000

1200

1400

1600

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Rev.: D Amendment: /0
Issue Date: March 2006

Micrel, Inc.

PACKAGE/ORDERING INFORMATION

SY100E310L

(1)

Package Operating Package Lead

J28-1 Industrial SY100E310LJI Sn-Pb
J28-1 Industrial SY100E310JY with Matte-Sn

Pb-Free bar-line indicator

J28-1 Industrial SY100E310JY with Matte-Sn

Pb-Free bar-line indicator

VBB

CLKB

4

321282726

NC

/Q7

Q7

/Q6

Q6

5
6
7
8
9
10
11

12

/Q5

13

Q5

/CLKB

VCCO

28-Pin PLCC (J28-1)

CLKA

VCC

/CLKA

14 15 16 17

Q4

/Q4

VCCO

CLK_SEL

VEE

25
24
23
22
21
20
19

18

Q3

/Q3

Q0
/Q0
Q1
VCCO
/Q1
Q2
/Q2

Ordering Information

Part Number Type Range Marking Finish

SY100E310JI J28-1 Industrial SY100E310LJI Sn-Pb
SY100E310JITR
SY100E310JY

SY100E310JYTR

Notes:

1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.

2. Tape and Reel.

3. Pb-Free package is recommended for new designs.

(2)

(3)

(2, 3)

PIN DESCRIPTION

Pin Number Pin Name Pin Function

1 VCC Positive Core Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors.

Not internally connected to V

28, 2, 4, 5 CLKA, /CLKA Differential Inputs: These input pairs are the differential data inputs to the device.

CLKB, /CLKB
3 VBB Reference Voltage Output. Used for AC-coupled inputs or single-ended inputs.
6 NC No Connect.

8, 15, 22 VCCO Positive Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors.

Not internally connected to VCC. Must be externally connected to VCC on PCB.

24, 21, 19, /Q0, /Q1, /Q2, /Q3 Differential Outputs.

17, 14, 12, 10, 7 /Q4, /Q5, /Q6, /Q7

25, 23, 20, 18, Q0, Q1, Q2, Q3 Differential Outputs.

16, 13, 11, 9, Q4, Q5, Q6, Q7

26 VEE Negative Supply.
27 CLK_SEL Single-Ended Clock Select.

. Must be externally connected to V

CCO

CCO

on PCB.

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SY100E310L

Absolute Maximum Ratings

(1)

Supply Voltage (VCC) ................................. –0.5V to +4.0V

Input Voltage (VIN) ........................................ –0.5V to V

Termination Current

(3)

CC

Source or sink current on VBB (IBB).....................±0.5mA

Input Current

Source or sink current

Operating Ratings

Supply Voltage (VCC) ................................. +3.0V to +3.6V

Ambient Temperature (TA)........................ –40°C to +85°C

Package Thermal Resistance

PLCC (θJA)

Still-Air ......................................................... 63.5°C/W

500lfpm........................................................ 43.5°C/W

(2)

(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) .........±50mA

Lead Temperature (soldering, 20 sec.) ...................+260°C

Storage Temperature (TS) ...................... –65°C to +150°C

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C; unless noted.

Symbol Parameter Condition Min Typ Max Units

V

CC

Power Supply 3.0 3.3 3.6 V

LVPECL DC ELECTRICAL CHARACTERISTICS

VCC = +3.3V, V

Symbol Parameter Condition Min Typ Max Units

I

CC

V

OH

V

OL

V

IH

V

IL

V

IHCMR

V

BB

I

IN

I

IL

= 0V; TA = –40°C to +85°C; unless noted.

EE

Power Supply Current No load, max. V
Output High Voltage RL = 50Ω to VCC–2V 2215 2345 2420 mV

(Q0-Q7, /Q0-/Q7)
Output Low Voltage RL = 50Ω to VCC–2V 1470 1595 1680 mV

(Q0-Q7, /Q0-/Q7)
Input High Voltage 2135 2420 mV

(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)
Input Low Voltage 1490 1825 mV

(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)
Input High Voltage Common Note 6 1.8 2.9 V

Mode Range (Differential)
(CLKA, / CLKA, CLKB, /CLKB)

Output Reference Voltage 1.92 2.04 V
Input HIGH Current 150 µA

(CLKA, /CLKA, CLKB,/CLKB, CLK_SEL)
Input LOW Current 0.5 µA

(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)

(4)

(4, 5)

CC

55 70 mA

Notes:

1. Permanent device damage may occur if Absolute Maximum Ratings are exceeded. This is a stress rating only and functional operation is not implied

at conditions other than those detailed in the operational sections of this data sheet. Exposure to Absolute Maximum Ratlng conditions for extended
periods may affect device reliability.

2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.

3. Due to the limited drive capability use for input of the same package only.

4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.

5. Input and output parameters vary 1:1 with VCC. VCC can vary ±0.3V.

6. V

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is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level

IHCMR

must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min).

3

Micrel, Inc.

SY100E310L

LVNECL DC ELECTRICAL CHARACTERISTICS

VCC = +3.3V, V

= 0V; TA = –40°C to +85°C; unless noted.

EE

(7, 8)

Symbol Parameter Condition Min Typ Max Units

V

OH

V

OL

Output High Voltage RL = 50Ω to VCC–2V –1085 –955 –880 mV
(Q0-Q7, /Q0-/Q7)

Output Low Voltage RL = 50Ω to VCC–2V –1830 –1705 –1620 mV
(Q0-Q7, /Q0-/Q7)

V

IH

Input High Voltage –1165 –880 mV
(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)

V

IL

V

IHCMR

Input Low Voltage –1810 –1475 mV
(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)

Input High Voltage Common Note 9 –1.5 –0.4 V
Mode Range (Differential)
(CLKA, / CLKA, CLKB, /CLKB)

V

BB

I

IN

I

IL

Output Reference Voltage –1.38 –1.26 V
Input HIGH Current 150 µA

(CLKA, /CLKA, CLKB,/CLKB, CLK_SEL)
Input LOW Current 0.5 µA

(CLKA, /CLKA, CLKB, /CLKB, CLK_SEL)

AC ELECTRICAL CHARACTERISTICS

VCC = +3.0 to +3.6V and VEE = 0V or VCC = 0V and VEE = –3.0 to –3.6V; TA = –40°C to +85°C; unless noted.

Symbol Parameter Condition Min Typ Max Units

f

MAX

t

PD

t

SKEW

t

JITTER

V

PP

t

, t

r

f

Notes:

7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.

8. Input and output parameters vary 1:1 with VCC. VCC can vary ±0.3V.

9. V

IHCMR

must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min).

10. The differential propagation delay is defined as the delay from the crossing points of the differential input signals to the crossing point of the

11. The single-ended propagation delay is defined as the delay from the 50% point of the input signal to the 50% point of the output signal.

12. The within-device skew is defined as the worst case difference between any two similar delay paths within a single device.

13. VPP(min) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. The VPP(min) is AC limited for

Maximum Operating Frequency V

= 400mV 800 MHz

OUT

Propagation Delay Note 10 525 725 ps
CLKA-to-Q, CLKB-to-Q (Differential)

CLKA-to-Q, CLKB-to-Q (Single-ended) Note 11 500 750 ps
Within-Device Skew Note 12 50 ps

Part-to-Part Skew (Differential) 200 ps
Cycle-to-Cycle Jitter 1ps
Input Swing Note 13 500 1000 mV
Rise / Fall Time (20% to 80%) 160 375 600 ps

(Q0-Q7, /Q0-/Q7)

is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level

differential output signals.

the E310L as a differential input as low as 50 mV will still produce full ECL levels at the output.

RMS

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y

)

TYPICAL OPERATING CHARACTERISTICS

VCC = 3.3V, TA = 25°C

SY100E310L

Output Swing

900
800
700
600
500
400
300
200

Q AMPLITUDE (mV)

100

vs. Frequenc

0

0

200

400

CLK FREQUENCY (MHz)

600

800

1000

1200

1400

1600

Input to Q

Propagation Delay

vs. Temperature

700
675
650
625
600
575
550
525

PROPAGATION DELAY (ps)

500

CLK-Q(S-E

-50 -25 0 25 50 75 100

TEMPERATURE (°C) (Forced Air)

SEL-Q

CLK-Q(Diff)

RELATED PRODUCT AND SUPPORT DOCUMENTATION

Part Number Function Data Sheet Link

HBW Solutions New Products and Applications www.micrel.com/product-info/products/solutions.shtml

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28-PIN PLCC (J28-1)

SY100E310L

Rev. 03

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 [phone] FAX + 1 [phone] WEB http://www.micrel.com

The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s

use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify

Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel for any damages resulting from such use or sale.

© 2006 Micrel, Incorporated.

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