SY100EP111UTI - MICREL SEMICONDUCTOR

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

BLOCK DIAGRAM

CLK0

/CLK0

CLK_SEL

/Q0

/Q1

/Q2

/Q3

/Q4

/Q5

/Q6

/Q7

/Q8

/Q9

VBB

VCC

VEE

CLK1

/CLK1

VCC

VEE

75kΩ

75kΩ75kΩ

75kΩ

75kΩ75kΩ

75kΩ

FEATURES

■2.5V and 3.3V power supply options

■Guaranteed AC parameters over temperature:

•f

MAX = 3GHz

•<25ps output-to-output skew

•<250ps tr/t

•<400ps propagation delay

■Wide temperature range: –40°C to +85°C

■Differential design

■VBB output for single-ended input applications

■Fully compatible with industry standard 100K I/O

levels

■Available in 32-pin TQFP package

The SY100EP111U is a high-speed, low skew 1-to-10

differential fanout buffer designed for clock distribution in

new, high-performance systems. The internal 2:1 mux

allows the input to select between two differential clock

sources.

The device is specifically designed for low skew. The

interconnect scheme and metal layout are carefully

optimized for minimal gate-to-gate skew within the device.

Wafer characterization and process control ensure

consistent distribution of propagation delay from lot to lot.

The VBB output is intended for use as a reference

voltage for single-ended reception of ECL signals to that

device only. When using VBB for this purpose, it is

recommended that VBB is decoupled to VCC via a 0.01µF

capacitor.

2.5V/3.3V 1:10 DIFFERENTIAL

LVPECL/LVECL/HSTL CLOCK DRIVER

DESCRIPTION

Precision Edge®

SY100EP111U

Rev.: F Amendment: /0

Issue Date: December 2005

Precision Edge is a registered trademark of Micrel, Inc.

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

PACKAGE/ORDERING INFORMATION

Ordering Information(1)

Package Operating Package Lead

Part Number Type Range Marking Finish

SY100EP111UTI T32-1 Industrial 100EP111UTI Sn-Pb

SY100EP111UTITR(2) T32-1 Industrial 100EP111UTI Sn-Pb

SY100EP111UTG(3) T32-1 Industrial 100EP111UTG with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY100EP111UTGTR(2, 3) T32-1 Industrial 100EP111UTG with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY100EP111UTGTX(2, 4) T32-1 Industrial 100EP111UTG with Pb-Free

Pb-Free bar-line indicator NiPdAu

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.

4. EIA specification orientation.

32 31 30 29 28 27 26 25

910111213141516

VCC

CLK_SEL

CLK0

/CLK0

VBB

CLK1

/CLK1

VEE

/Q3

/Q4

/Q5

/Q6

VCC

/Q0

/Q1

/Q2

VCC

/Q9

/Q8

/Q7

Top View

TQFP

T32-1

VCC

32-Pin TQFP (T32-1)

Pin Function

CLK0, /CLK0 LVPECL, LVECL, HSTL Clock Inputs:

CLK0 input includes a 75kΩ pull-down. Default

is low if left floating. /CLK0 includes an internal

75kΩ pull-up and pull-down. Default state is

VCC/2.

CLK1, /CLK1 LVPECL, LVECL, HSTL Clock Inputs:

CLK input includes a 75kΩ pull-down. Default

is low if left floating. /CLK includes an internal

75kΩ pull-up and pull-down. Default state is

VCC/2.

Q0 to Q9 LVPECL/LVECL Outputs.

/Q0 to /Q9 Complementary LVPECL/LVECL Outputs.

CLK_SEL LVPECL/LVECL Clock Select Input: Internal

75kΩ resistor connected to VEE. When left

floating, the default condition is LOW.

VBB Reference Voltage: AC coupled or single-

ended input applications.

VCC Positive Power Supply: Bypass with 0.1µF//

0.01µF low ESR capacitors.

VEE Negative Power Supply: LVPECL operation,

connect to GND.

PIN NAMES

CLK_SEL Active Input

0CLK0, /CLK0

1CLK1, /CLK1

FUNCTION TABLE

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

Symbol Rating Value Unit

VCC –V

EE Power Supply Voltage 6.0 V

VIN Input Voltage (VCC = 0V, VIN not more negative than VEE)–6.0 to 0 V

Input Voltage (VEE = 0V, VIN not more positive than VCC)+6.0 to 0

IOUT Output Current –Continuous 50 mA

–Surge 100

IBB VBB Sink/Source Current(2) ±0.5 mA

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

TAOperating Temperature Range –40 to +85 °C

Tstore Storage Temperature Range –65 to +150 °C

θJA Package Thermal Resistance –Still-Air 50 °C/W

(Junction-to-Ambient) –500lfpm 42

θJC Package Thermal Resistance 20 °C/W

(Junction-to-Case)

Note 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.

Note 2. Due to the limited drive capability, use for inputs of same package only.

ABSOLUTE MAXIMUM RATINGS(1)

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VCC Power Supply Voltage

(LVPECL) 2.375 — 3.8 2.375 — 3.8 2.375 — 3.8 V

(LVECL) –3.8 — –2.375 –3.8 — –2.375 –3.8 — –2.375 V

IEE Power Supply Current — 55 120 — 70 120 — 85 120 mA

IIH Input HIGH Current — — 150 — — 150 — — 150 µAV

IN =V

IIL Input LOW Current

CLK0, CLK1 0.5 — — 0.5 — — 0.5 — — µAV

IN =V

/CLK0, /CLK1 –150 — — –150 — — –150 — — µAV

IN =V

CIN Input Capacitance ———— 2 ————pF

Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The

circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.

DC ELECTRICAL CHARACTERISTICS(1)

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIH Input HIGH Voltage 2135 — 2420 2135 — 2420 2135 — 2420 mV

(Single-Ended)

VIL Input LOW Voltage 1355 — 1675 1355 — 1675 1355 — 1675 mV

(Single-Ended)

VOL Output LOW Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV

50Ω to VCC–2V

VOH Output HIGH Voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mV

50Ω to VCC–2V

VBB Reference Voltage(2) 1775 1875 1975 1775 1875 1975 1775 1875 1975 mV

VIHCMR Input HIGH Voltage 1.2 — VCC 1.2 — VCC 1.2 — VCC V

Common Mode Range(3)

Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The

circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies

1:1 with VCC.

Note 2. Single-ended input operation is limited VCC ≥3.0V in LVPECL mode. VBB reference varies 1:1 with VCC.

Note 3. VIHCMR (Min) varies 1:1 with VEE, VIHCMR (Max) varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the

differential input signal.

LVPECL DC ELECTRICAL CHARACTERISTICS(1)

VCC = 3.3V ±10%; VEE = 0V

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIH Input HIGH Voltage 1335 — 1620 1335 — 1620 1335 — 1620 mV

(Single-ended)

VIL Input LOW Voltage 555 — 875 555 — 875 555 — 875 mV

(Single-ended)

VOL Output LOW Voltage 555 680 805 555 680 805 555 680 805 mV

50Ω to VCC–2V

VOH Output HIGH Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV

50Ω to VCC–2V

VIHCMR Input HIGH Voltage 1.2 — VCC 1.2 — VCC 1.2 — VCC V

Common Mode Range(2)

Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The

circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies

1:1 with VCC.

Note 2. VIHCMR (Min) varies 1:1 with VEE, VIHCMR (Max) varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the

differential input signal.

LVPECL DC ELECTRICAL CHARACTERISTICS(1)

VCC = 2.5V ±5%, VEE = 0V

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit

VIH Input HIGH Voltage 1200 — — 1200 — — 1200 — — mV

VIL Input LOW Voltage — — 400 — — 400 — — 400 mV

VXInput Crossover Voltage 680 — 900 680 — 900 680 — 900 mV

HSTL DC ELECTRICAL CHARACTERISTICS

VCC = 2.375V to 3.8V; VEE = 0V

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIL Input LOW Voltage –1945 — –1625 –1945 — –1625 –1945 — –1625 mV

(Single-ended)

VIH Input HIGH Voltage –1165 — –0880 –1165 — –0880 –1165 — –0880 mV

(Single-ended)

VOL Output LOW Voltage –1945 –1820 –1695 –1945 –1820 –1695 –1945 –1820 –1695 mV

50Ω to VCC–2V

VOH Output HIGH Voltage –1145 –1020 –0895 –1145 –1020 –0895 –1145 –1020 –0895 mV

50Ω to VCC–2V

VBB Output Reference Voltage(2) –1525 –1425 –1325 –1525 –1425 –1325 –1525 –1425 –1325 mV

VIHCMR Input HIGH Voltage VEE +1.2 0.0 VEE +1.2 0.0 VEE +1.2 0.0 V

Common Mode Range(3)

Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The

circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.

Note 2. Single-ended input operation is limited VEE ≤ –3.0V in LVECL mode.

Note 3. VIHCMR (min) varies 1:1 with VEE. The VIHCMR range is referenced to the most positive side of the differential input signal.

LVECL DC ELECTRICAL CHARACTERISTICS(1)

VEE = –2.375V to –3.8V; VCC = 0V

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

fMAX Maximum Frequency(1) 3——3——3——GHz

tPD Propagation Delay (Diff.) 250 350 400 250 350 400 250 350 400 ps

tSKEW Within-Device Skew — 20 25 — 20 25 — 20 25 ps (2)

Part-to-Part Skew — 85 150 — 85 150 — 85 150 ps (3)

tJITTER Cycle-to-Cycle Jitter (rms) — 0.2 < 1 — 0.2 < 1 — 0.2 < 1 ps

VPP Minimum Input Swing(4) 150 800 1200 150 800 1200 150 800 1200 mV

tr, tfOutput Rise/Fall Time 100 170 250 100 170 250 100 170 250 ps

(20% to 80%)

Note 1. Measured with 750mV clock signal, 50% duty cycle. All loading with a 50Ω to VCC –2.0V.

Note 2. Input clock to any output (Q0 to Q9); Differential.

Note 3. Measured for same transitions.

Note 4. See “Timing Waveform.”

AC ELECTRICAL CHARACTERISTICS

(LVPECL) VCC = 2.375 to 3.8V, VEE = 0V; (LVECL) VEE = –2.375V to –3.8V, VCC = 0V

TIMING WAVEFORM

CLK(0:1)

/CLK(0:1) 150mV to 1200mV

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

TYPICAL CHARACTERISTICS

200

300

400

500

600

700

800

900

500

1000

1500

2000

2500

3000

3500

4000

OUTPUT AMPLITUDE (mVp-p)

FREQUENCY (MHz)

Frequency Response

vs. Output Amplitude

SUP

= 2.5V

DIFFIN

= 800mV

200

300

400

500

600

700

800

900

500

1000

1500

2000

2500

3000

3500

4000

OUTPUT AMPLITUDE (mVp-p)

FREQUENCY (MHz)

Frequency Response

vs. Output Amplitude

SUP

= 3.3V

DIFFIN

= 800mV

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

TERMINATION RECOMMENDATIONS

R2

82Ω

R2

82Ω

= 50Ω

+3.3V +3.3V

= V

–2V

R1

130ΩR1

130Ω

+3.3V

Figure 1. Parallel Termination–Thevenin Equivalent

Note 1. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω

= 50Ω

50Ω50Ω

46Ω to 50Ω

+3.3V +3.3V

“source” “destination”



b

Figure 2. Three-Resistor “Y–Termination”

Note 1. Power-saving alternative to Thevenin termination.

Note 2. Place termination resistors as close to destination inputs as possible.

Note 3. Rb resistor sets the DC bias voltage, equal to Vt.

+3.3V +3.3V

50Ω

= 50Ω

0.01µF

R2

82Ω

+3.3V +3.3V

R1

130ΩR1

130Ω

R2

82Ω

= V

–2V

+3.3V



Figure 3. Terminating Unused I/O

Note 1. Unused output (/Q) must be terminated to balance the output.

Note 2. Micrel's differential I/O logic devices include a VBB reference pin .

Note 3. Connect unused input through 50Ω to VBB. Bypass with a 0.01µF capacitor to VCC, not GND.

Note 4. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω.

Precision Edge®

SY100EP111U

Micrel, Inc.

M9999-021511

hbwhelp@micrel.com or (408) 955-1690

32-PIN THIN QUAD FLATPACK (T32-1)

Rev. 01

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

TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 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 reserves the right to change circuitry and specifications at any time without notification to the customer.

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 for any damages resulting from such use or sale.