621NILFT各脚功能电路原理芯片引脚定义引脚图及功能IC贸易商-中国IC网-芯三七

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LOW SKEW 1 TO 4 CLOCK BUFFER

ICS621

Description

Features

The ICS621 is a low skew, single input to four output, clock

buffer. The device operates from a single 1.2 to 1.8 volt

supply and has a 3.3 volt tolerant input, making it ideal for

level translation.

• Low skew outputs (150 ps)

• Packaged in 8-pin SOIC or 8-pin DFN (2x2mm)

• Available in RoHS 5 or RoHS 6 (lead-free) package

• Low power CMOS technology

IDT makes many non-PLL and PLL based low skew output

devices as well as Zero Delay Buffers to synchronize

clocks. Contact us for all of your clocking needs.

• Operating Voltages of 1.2 V to 1.8 V

• Output Enable pin tri-states outputs

• 3.3 V tolerant input clock

• Industrial or commercial temperature ranges

Block Diagram

Q0

Q1

Q2

Q3

ICLK

Output Enable

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

1

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Pin Assignment (8-pin SOIC)

Pin Assignment (8-pin DFN)

8

ICLK

1

OE

1

8

ICLK

Q1

VDD

GND

Q4

VDD

Q1

Q2

Q3

2

3

4

7

Q2

Q3

GND

Q4

6

5

4

5

Pin Descriptions

Pin Description

Number Name Type

1

2

3

4

5

6

7

8

ICLK

Q1

Input

Clock Input. 3.3 V tolerant input.

Output Clock Output 1.

Q2

Output Clock Output 2.

Q3

Output Clock Output 3.

Q4

Output Clock Output 4.

GND

VDD

OE

Power Connect to ground.

Power Connect to +1.2 V or +1.8 V.

Input

Output Enable. Tri-states outputs when low. Connect to VDD for normal operation.

External Components

A minimum number of external components are required for proper operation. A decoupling capacitor of 0.01 µF

should be connected between VDD on pin 7 and GND on pin 6, as close to the device as possible. A 33 Ω series

terminating resistor may be used on each clock output if the trace is longer than 1 inch.

To achieve the low output skew that the ICS621 is capable of, careful attention must be paid to board layout.

Essentially, all four outputs must have identical terminations, identical loads and identical trace geometries. If they

do not, the output skew will be degraded. For example, using a 30Ω series termination on one output (with 33Ω on

the others) will cause at least 15 ps of skew.

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

2

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS621. These ratings, which are

standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at

these or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical

parameters are guaranteed only over the recommended operating temperature range.

Item

Rating

Supply Voltage, VDD

5 V

Output Enable and All Outputs

ICLK

-0.5 V to VDD+0.5 V

-0.5 V to 3.6 V (VDD > 0V)

-40 to +85 °C

0 to +70 °C

Ambient Operating Temperature (industrial)

Ambient Operating Temperature (commercial)

Storage Temperature

-65 to +150°C

125°C

Junction Temperature

Soldering Temperature

260°C

Recommended Operation Conditions

Parameter

Min.

Typ.

Max.

Units

°C

Ambient Operating Temperature (industrial)

Ambient Operating Temperature (commercial)

Power Supply Voltage (measured in respect to GND)

-40

0

+85

+70

1.89

°C

1.14

V

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

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ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

DC Electrical Characteristics

VDD=1.2 V 5%, Ambient temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Operating Voltage

VDD

1.14

1.26

V

Input High Voltage

V

Note 1, ICLK, OE 0.65VDD

Note 1, ICLK, OE

VDD+0.3

0.35VDD

V

IH

Input Low Voltage

V

IL

Output High Voltage

Output Low Voltage

Operating Supply Current

Nominal Output Impedance

Input Capacitance

V

I

= -2 mA

= 2 mA

0.75VDD

V

OH

OL

V

0.25VDD

V

OL

IDD

No load, 133 MHz

TBD

20

5

mA

Ω

Z

O

IN

C

ICLK, OE pin

pF

mA

Short Circuit Current

I

20

OS

Notes: 1. Nominal switching threshold is VDD/2

VDD=1.5 V 5%, Ambient temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ.

Max.

1.575

Units

V

Operating Voltage

VDD

1.425

Input High Voltage

V

Note 1, ICLK, OE 0.65VDD

Note 1, ICLK, OE

VDD+0.3

0.35VDD

V

IH

Input Low Voltage

V

IL

Output High Voltage

Output Low Voltage

Operating Supply Current

Nominal Output Impedance

Input Capacitance

V

I

= -6 mA

= 6 mA

0.75VDD

V

OH

OL

V

0.25VDD

V

OL

IDD

No load, 133 MHz

25

20

5

mA

Ω

Z

O

IN

C

ICLK, OE pin

pF

mA

Short Circuit Current

I

28

OS

Notes: 1. Nominal switching threshold is VDD/2

VDD=1.8 V 5%, Ambient temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ.

Max.

1.89

Units

V

Operating Voltage

VDD

1.71

Input High Voltage, ICLK

Input Low Voltage, ICLK

Output High Voltage

V

Note 1, ICLK, OE 0.65VDD

Note 1, ICLK, OE

VDD+0.3

0.35VDD

V

IH

V

IL

V

I

= -8 mA

= 8 mA

1.35

V

OH

OL

Output Low Voltage

V

0.45

V

OL

Operating Supply Current

Nominal Output Impedance

Input Capacitance

IDD

No load, 133 MHz

50

20

5

mA

Ω

Z

O

IN

C

ICLK, OE pin

pF

mA

Short Circuit Current

I

50

OS

Notes: 1. Nominal switching threshold is VDD/2

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

4

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

AC Electrical Characteristics

VDD = 1.2 V 5%, Ambient Temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ. Max. Units

Input Frequency

0

100

1.5

5

MHz

ns

Output Rise Time

Output Fall Time

t

20% to 80%, Note 3

80% to 20%, Note 3

1.0

3

OR

t

ns

OF

Propagation Delay

Output to Output Skew

Note 1

Note 2

2.2

ns

Rising edges at VDD/2

0

150

ps

VDD = 1.5 V 5%, Ambient Temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ. Max. Units

Input Frequency

0

166

1.5

5

MHz

ns

Output Rise Time

Output Fall Time

t

20% to 80%, Note 3

80% to 20%, Note 3

1.0

3

OR

t

ns

OF

Propagation Delay

Output to Output Skew

Note 1

Note 2

2.2

ns

Rising edges at VDD/2

0

150

ps

VDD = 1.8 V 5%, Ambient Temperature -40 to +85°C or 0 to +70°C, unless stated otherwise

Parameter

Symbol

Conditions

Min.

Typ. Max. Units

Input Frequency

0

200

1.5

5

MHz

ns

Output Rise Time

t

20% to 80%, Note 3

80% to 20%, Note 3

1.0

3

OR

Output Fall Time

t

ns

OF

Propagation Delay

Note 1

Note 2

2.2

ns

Output to Output Skew

Rising edges at VDD/2

0

150

ps

Notes: 1. With rail to rail input clock

2. Between any 2 outputs with equal loading.

3. Measured with a 15 pF load.

Thermal Characteristics

Parameter

Symbol

Conditions

Min.

Typ. Max. Units

Thermal Resistance Junction to

Ambient

θ

Still air

150

140

120

40

°C/W

°C

JA

JC

1 m/s air flow

3 m/s air flow

Thermal Resistance Junction to Case

Case Temperature

120

Thermal Resistance Junction to Top

of Case

Ψ

Still air

20

°C/W

JT

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

5

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Package Outline and Package Dimensions (8-pin DFN 2x2mm, 0.5mm pitch)

Package dimensions are kept current with JEDEC Publication No. 95,

Millimeters

Symbol

Min

0.80

0

0.20 Reference

0.20

Max

1.00

0.05

A

A1

A3

b

0.30

N

8

4

0

N

D

E

D

E

e

2.00 BASIC

0.50 BASIC

D2

E2

L

1.05

0.45

0.20

1.25

0.65

0.40

aaa

bbb

ccc

0.15

0.10

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

6

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body)

Package dimensions are kept current with JEDEC Publication No. 95

Millimeters

Inches*

8

Symbol

Min

Max

Min

Max

A

A1

B

C

D

E

e

1.35

0.10

0.33

0.19

4.80

3.80

1.75

0.25

0.51

0.25

5.00

4.00

.0532

.0040

.013

.0688

.0098

.020

E

H

INDEX

AREA

.0075

.1890

.1497

.0098

.1968

.1574

1.27 BASIC

0.050 BASIC

1

2

H

h

5.80

0.25

0.40

0°

6.20

0.50

1.27

8°

.2284

.010

.016

0°

.2440

.020

.050

8°

D

L

α

*For reference only. Controlling dimensions in mm.

A

h x 45

A1

C

- C -

e

SEATING

PLANE

B

L

.10 (.004)

C

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

7

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Ordering Information

Part / Order Number

ICS621MI

Marking

Shipping Packaging

Tubes

Package

8-pin SOIC

8-pin DFN

Temperature

ICS621MI

621MILF

ICS621M

621MLF

621NLF

-40 to +85°C

0 to +70°C

-40 to +85°C

ICS621MIT

Tape and Reel

Tubes

ICS621MILF

ICS621MILFT

ICS621M

Tape and Reel

Tubes

Tape and Reel

Tubes

Tape and Reel

Tubes

ICS621MT

ICS621MLF

ICS621MLFT

ICS621NLF

ICS621NLFT

ICS621NILF

ICS621NILFT

621NLF

621NILF

Tape and Reel

Tubes

Tape and Reel

Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) result from its

use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other

applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are

not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS

does not authorize or warrant any ICS product for use in life support devices or critical medical instruments.

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

8

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Revision History

Rev.

Originator

Date

Description of Change

A

S. Sharma

06/08/06 New device/datasheet; Preliminary release.

IDT™ / ICS™ LOW SKEW 1 TO 4 CLOCK BUFFER

9

ICS621

REV A 062006

ICS621

LOW SKEW 1 TO 4 CLOCK BUFFER

FAN OUT BUFFER

Innovate with IDT and accelerate your future networks. Contact:

www.IDT.com

For Sales

800-345-7015

408-284-8200

Fax: 408-284-2775

For Tech Support

Corporate Headquarters

Integrated Device Technology, Inc.

6024 Silver Creek Valley Road

San Jose, CA 95138

Asia Pacific and Japan

Integrated Device Technology

Singapore (1997) Pte. Ltd.

Reg. No. 199707558G

435 Orchard Road

Europe

IDT Europe, Limited

Prime House

Barnett Wood Lane

Leatherhead, Surrey

United Kingdom KT22 7DE

+44 1372 363 339

United States

800 345 7015

#20-03 Wisma Atria

+408 284 8200 (outside U.S.)

Singapore 238877

+65 6 887 5505

Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered

trademarks used to identify products or services of their respective owners.

Printed in USA

型号:	621NILFT
Brand Name：	Integrated Device Technology
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Obsolete
IHS 制造商：	INTEGRATED DEVICE TECHNOLOGY INC
零件包装代码：	VFQFPN
包装说明：	VSON, SOLCC8,.08,20
针数：	8
制造商包装代码：	NBG8P1
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	7.73
系列：	621
输入调节：	STANDARD
JESD-30 代码：	S-XDSO-N8
JESD-609代码：	e3
长度：	2 mm
逻辑集成电路类型：	LOW SKEW CLOCK DRIVER
最大I（ol）：	0.008 A
湿度敏感等级：	1
功能数量：	1
反相输出次数：
端子数量：	8
实输出次数：	4
最高工作温度：	85 °C
最低工作温度：	-40 °C
输出特性：	3-STATE
封装主体材料：	UNSPECIFIED
封装代码：	VSON
封装等效代码：	SOLCC8,.08,20
封装形状：	SQUARE
封装形式：	SMALL OUTLINE, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260
电源：	1.2/1.8 V
Prop。Delay @ Nom-Sup：	5 ns
传播延迟（tpd）：	5 ns
认证状态：	Not Qualified
Same Edge Skew-Max（tskwd）：	0.15 ns
座面最大高度：	1 mm
子类别：	Clock Drivers
最大供电电压 (Vsup)：	1.89 V
最小供电电压 (Vsup)：	1.14 V
标称供电电压 (Vsup)：	1.2 V
表面贴装：	YES
技术：	CMOS
温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn) - annealed
端子形式：	NO LEAD
端子节距：	0.5 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	2 mm
最小 fmax：	200 MHz
Base Number Matches：	1

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