ASM2I20807AG-20-AR--Datasheet/数据表在线中文翻译

June 2005

rev 0.2

ASM2P20807A

2.5V CMOS 1-TO-10 CLOCK DRIVER

Product Description

Features

• High frequency > 150MHz

The ASM2P20807A is a 2.5V compatible, high speed, low

noise, 1:10 fanout, non-inverting clock buffer. The large

fanout from a single input reduces loading on the preceding

driver and provides an efficient clock distribution network.

• Guaranteed low skew < 150pS (max.) between any two

outputs

• Very low duty cycle distortion < 300pS

• High speed: propagation delay < 3nS

• Very low CMOS power levels

• TTL compatible inputs and outputs

• 1:10 fanout

Providing output to output skew as low as 150pS, the

ASM20807A is an ideal clock distribution device for

synchronous systems. Multiple power and grounds reduce

noise. Typical applications are clock and signal distribution.

• Maximum output rise and fall time < 1.25nS (max.)

• Low input capacitance: 3pF (typ)

• 2.5V Supply Voltage

• Available in SSOP and QSOP Packages

Block Diagram

O₁

O₂

O₃

O₄

O₅

IN

O₆

O₇

O₈

O₉

O₁₀

Alliance Semiconductor

2575, Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com

Notice: The information in this document is subject to change without notice.

June 2005

ASM2P20807A

rev 0.2

Pin Configuration

IN

V_CC

O₁₀

O₉

1

2

20

19

GND

A

S

M

2

3

4

18

17

O₁

V_CC

O₂

GND

O₈

5

16

15

14

13

12

11

P

2

V_CC

O₇

6

GND

O₃

0

8

7

0

GND

0₆

8

V_CC

7

A

9

O₄

O₅

10

GND

SSOP/ QSOP PACKAGE

TOP VIEW

Pin Description

Pin #

1

Pin Names

Description

I N

Clock Input

Clock Outputs

Ground

3,5,7,9,11,12,14,16,18,19

2,6,10,13,17

O₁-O₁₀

GND

V_CC

4,8,15,20

Power supply

Capacitance ^{(TA = +25°C, f = 1.0MHz)}

Symbol

Parameter¹

Input Capacitance

Conditions

V_IN= 0V

Typ

3

Max

4

Unit

pF

C_IN

NOTE:1. This parameter is measured at characterization but not tested.

Absolute Maximum Ratings¹

Symbol

Description

Terminal Voltage with Respect to GND

Max

-0.5 to +4.6

Unit

V

2

V_TERM

3

V_TERM

Terminal Voltage with Respect to GND

Storage Temperature

-0.5 to +5.5

-0.5 to V_CC+0.5

-65 to +150

-60 to +60

V

4

V_TERM

TSTG

° C

mA

IOUT

DC Output Current

NOTES:

1. These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect

device reliability.

2. V_CCterminals.

3. Input terminals.

4. Outputs and I/O terminals.

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

ASM2P20807A

rev 0.2

Power Supply Characteristics

Symbol

Parameter

Test Conditions¹

Min

Typ²

Max

Unit

I_CCL

Quiescent

Power

V_CC= Max

Supply Current TTL

Inputs HIGH

-

0.1

20

µA

I_CCH

V_IN= GND or V_CC

∆I_CC

Power Supply Current

per Input HIGH

V_CC= Max

-

45

40

300

-

µA

V

_IN= V_CC-0.6V

I_CCD

Dynamic Power Supply

Current per Output³

V_CC= 2.7V and 15 pF load

150 MHz

µA

/MHz

I_C

Total Power Supply V_CC= Max.

V_IN= V_CC

Current⁴

-

65

75

90

V_IN= GND

C_L= 12pF

mA

All outputs toggling

fi = 150MHz

V_IN= V_CC–0.6V

V_IN= GND

100

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at V_CC= 2.5V, +25°C ambient.

3. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.

4. I_C= IQUIESCENT + IINPUTS + IDYNAMIC

I

_C= I_CC+ ∆I_CCDHNT + I_CCD(fi)

I_CC= Quiescent Current (I_CCL, I_CCHand I_CCZ

)

∆I_CC= Power Supply Current for a TTL High Input (V_IN= V_CC-0.6V)

D_H= Duty Cycle for TTL Inputs High

N_T= Number of TTL Inputs at DH

I_CCD= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

fi = Input Frequency

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

rev 0.2

ASM2P20807A

DC Electrical Characteristics Over Operating Range

Following Conditions Apply Unless Otherwise Specified

Industrial: T_A= -40°C to +85°C, V_CC= 2.5V ± 0.2V

Symbol Parameter

Test Conditions¹

Min

1.7

-

Typ²

-

Max

-

Unit

V

V_IH

Input HIGH Level

V_IL

Input LOW Level

-

0.7

V

Input HIGH Current

(Input pins)

I_IH

V

_CC= Max, V_I= V_CC

_CC= Max, V_I= GND

-

±1

mA

Input

LOW

Current

I_IL

V

-

±1

-1

mA

V

(Input pins)

V_IK

Clamp Diode Voltage

Output HIGH Current

V_CC= Min, I_IN= -18mA

V_CC= 2.5V, V_IN= V_IHor V_IL

V_O= 1.25V³

-0.7

I_ODH

-25

20

-45

55

-100

120

mA

V

V_CC= 2.5V, V_IN= V_IHor V_IL

V_O= 1.25V³

I_ODL

Output LOW Current

Output HIGH Voltage

V_CC= Min V_IN= V_IHor V_IL

I_OH= -1mA

I_OH= -8mA

I_OL= 1mA

I_OL= 8mA

V_CC–0.2

1.8⁵

-

V_OH

V_OL

-

Output LOW Voltage

Short Circuit Current⁴

V_CC= Min

-

0.4

0.6

-135

V

V_IN= V_IHor V_IL

V_CC= Max., V_O= GND³

-

I_OS

-25

-60

mA

NOTES:

1. For conditions shown as Max or Min, use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 2.5V, +25°C ambient.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. This parameter is guaranteed but not tested.

5. V_OH= Vcc - 0.6V at rated current.

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

rev 0.2

ASM2P20807A

Switching Characteristics Over Operating Range^1,2

Following Conditions Apply Unless Otherwise Specified

Industrial: T_A= -40°C to +85°C, V_CC= 2.5V ± 0.2V

Symbol Parameter

Conditions³

C_L= 22pF

Min

Typ

Max

Unit

Propagation Delay

t_PLH

t_PHL

t_R

-

3

3.5

nS

100 MHz

Output Rise Time

-

1

1.25

150

300

600

nS

pS

t_F

Output Fall Time

1

t_SK(O)

t_SK(P)

t_SK(PP)

Same Device Output Pin-to-Pin Skew⁴

Pulse Skew⁵

Part-to-Part Skew⁶

100

250

400

Symbol

t_PLH

Parameter

Propagation Delay

Conditions^3,7

C_L= 12pF

Min

Typ

Max

Unit

-

2.4

2.7

nS

150 MHz

t_PHL

t_R

Output Rise Time

-

1

1.2

nS

pS

t_F

Output Fall Time

1

t_SK(O)

t_SK(P)

Same Device Output Pin-to-Pin Skew⁴

Pulse Skew⁵

Part-to-Part Skew⁶

100

250

400

150

300

600

t_SK(PP)

NOTES:

1. t_PLHand t_PHLare production tested. All other parameters guaranteed but not production tested.

2. Propagation delay range indicated by Min. and Max. limit is due to VCC, operating temperature and process parameters. These propagation delay limits do

not imply skew.

3. See test circuits and waveforms.

4. Skew measured between all outputs under identical transitions and load conditions.

5. Skew measured is difference between propagation delay times t_PHLand t_PLHof same output under identical load conditions.

6. Part to part skew for all outputs given identical transitions and load conditions at identical VCC levels and temperature.

7. Airflow of 1m/s is recommended for frequencies above 133MHz.

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

ASM2P20807A

rev 0.2

Test Circuits and Waveforms

V_CC

O

VOUT

VIN

D.U.T

Pulse

Generator

CL

CL = Load Capacitance: Includes Jig and Capacitance probe

2.5V

1.25V

INPUT

OV

t_PLH

V_OH

1.7 V

1.25 V

V_OL

0.7 V

OUTPUT

t_R

t_F

Propagation Delay

2.5V

1.25V

INPUT

OV

t_PLH

V_OH

1.25 V

V_OL

OUTPUT

t_SK(p)=[ t_PHL– t_PLH

]

Pulse Skew - t_SK(P)

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

rev 0.2

ASM2P20807A

2.5V

1.25V

INPUT

OV

t_PLH

t_{PLHL 1}

V_OH

1.25 V

OUTPUT 1

V_OL

t_SK(O)

V_OH

1.25 V

OUTPUT 2

V_OL

t_PHL2

t_PLH2

t_SK(O)=[ t_PLH2– t_{PLH 1}] or [t_{PHL2 -}t_PHL1

]

Output Skew - t_SK(O)

2.5V

1.25V

INPUT

OV

t_{PLH 1}

t_PLHL

1

V_OH

1.25 V

DEVICE 1 OUTPUT

DEVICE 2 OUTPUT

V_OL

t_SK(t)

V_OH

1.25 V

V_OL

t_PHL2

t_SK(t)=[ t_PLH2– t_{PLH 1}] or [t_{PHL2 -}t_PHL1

t_PLH2

DEVICE 2 OUTPUT

]

Part-to-Part Skew - t_SK(PP)

NOTE: Device 1 and device 2 are same package type and speed grade.

Test Conditions

Symbol

C_L

VCC = 2.5V ±0.2V

Unit

22¹

pF

12²

R_T

Z _OUTof pulse generator

Ω

t_R/ t_F

1.25¹

1.2²

nS

DEFINITIONS:

C_L= Load capacitance: includes jig and probe capacitance.

R_T= Termination resistance: should be equal to ZOUT of the Pulse Generator.

t

_R/ t_F= Rise/Fall time of the input stimulus from the Pulse Generator.

NOTES:

1. Test conditions at 100MHz.

2. Test conditions at 150MHz.

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

ASM2P20807A

rev 0.2

Package Information

20-lead SSOP ( 150 mil ) Package

Dimensions

Millimeters

Symbol

Inches

Min

0.053

0.004

….

0.337

0.007

0.228

0.150

0.016

Max

0.069

0.010

0.059

0.344

0.012

0.244

0.157

0.035

Min

1.346

0.102

….

8.560

0.178

5.791

3.810

0.406

Max

1.753

0.254

1.499

8.738

0.274

6.198

3.988

0.890

A

A1

A2

D

c

E

E1

L

L1

b

R1

a

0.010 BASIC

0.254 BASIC

0.203

0.003

0°

0.325

….

8°

0.008

0.08

0°

0.014

…..

8°

e

0.025 BASIC

0.635 BASIC

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

rev 0.2

ASM2P20807A

20-lead QSOP Package

Dimensions

Millimeters

Symbol

Inches

Min

Max

0.068

0.008

0.012

0.010

0.344

0.157

Min

1.52

0.10

0.23

0.18

8.56

3.81

Max

1.73

0.20

0.30

0.25

8.74

3.99

A

A1

b

0.060

0.004

0.009

0.007

0.337

0.150

c

D

E

e

0.025 BSC

0.64 BSC

H

h

L

S

a

0.230

0.010

0.016

0.056

0°

0.244

0.016

0.035

0.060

8°

5.84

0.25

0.41

1.42

0°

6.20

0.41

0.89

1.52

8°

2.5V CMOS 1-TO-10 CLOCK DRIVER

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Notice: The information in this document is subject to change without notice.

June 2005

ASM2P20807A

rev 0.2

Ordering Information

Part Number

ASM2P20807A-20-AR

ASM2P20807A-20-AT

ASM2P20807A-20-DR

ASM2P20807A-20-DT

ASM2I20807AG-20-AR

ASM2I20807AG-20-AT

ASM2I20807AG-20-DR

ASM2I20807AG-20-DT

Marking

2P20807A

Package Type

20-Pin SSOP, TAPE & REEL

20-Pin SSOP, TUBE

Temperature

Commercial

2P20807A

2I20807AG

Commercial

20-Pin QSOP, TAPE & REEL

20-Pin QSOP, TUBE

20-Pin SSOP, TAPE & REEL, Green

20-Pin SSOP, TUBE, Green

20-Pin QSOP, TAPE & REEL, Green

20-Pin QSOP, TUBE, Green

Industrial

Device Ordering Information

A S M 2 P 2 0 8 0 7 A G - 2 0 - A R

R = Tape & reel, T = Tube or Tray

O = SOT

U = MSOP

E = TQFP

L = LQFP

U = MSOP

P = PDIP

S = SOIC

T = TSSOP

A = SSOP

V = TVSOP

B = BGA

D = QSOP

X = SC-70

Q = QFN

DEVICE PIN COUNT

F = LEAD FREE AND RoHS COMPLIANT PART

G = GREEN PACKAGE

PART NUMBER

X= Automotive

I= Industrial

P or n/c = Commercial

(0C to +70C)

(-40C to +125C) (-40C to +85C)

1 = Reserved

6 = Power Management

7 = Power Management

8 = Power Management

9 = Hi Performance

0 = Reserved

2 = Non PLL based

3 = EMI Reduction

4 = DDR support products

5 = STD Zero Delay Buffer

ALLIANCE SEMICONDUCTOR MIXED SIGNAL PRODUCT

Licensed under US patent Nos 5,488,627 and 5,631,920.

2.5V CMOS 1-TO-10 CLOCK DRIVER

10 of 11

Notice: The information in this document is subject to change without notice.

June 2005

rev 0.2

ASM2P20807A

Alliance Semiconductor Corporation

2595, Augustine Drive,

Santa Clara, CA 95054

Tel# 408-855-4900

Advance Information

Part Number: ASM2P20807A

Document Version: v0.2

Fax: 408-855-4999

www.alsc.com

Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to Alliance Semiconductor, dated 11-11-2003

trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their

respective companies. Alliance reserves the right to make changes to this document and its products at any time without

notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein

represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this

data at any time, without notice. If the product described herein is under development, significant changes to these

specifications are possible. The information in this product data sheet is intended to be general descriptive information for

potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or

customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product

described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products

including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual

property rights, except as express agreed to in Alliance's Terms and Conditions of Sale which are available from Alliance. All

sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of

products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any

other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical

components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant

injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that the manufacturer

assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use.

2.5V CMOS 1-TO-10 CLOCK DRIVER

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