87946AYI-147T datasheet, PDF - EEWORLD Datasheet

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87946AYI-147T: DescriptionLow Skew Clock Driver, 87946 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32; Categorylogic logic; File Size702KB，14 Pages; ManufacturerIDT (Integrated Device Technology)

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87946AYI-147T Overview

Low Skew Clock Driver, 87946 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32

87946AYI-147T Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	IDT (Integrated Device Technology)
Parts packaging code	QFP
package instruction	7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32
Contacts	32
Reach Compliance Code	not_compliant
ECCN code	EAR99
series	87946
Input adjustment	MUX
JESD-30 code	S-PQFP-G32
JESD-609 code	e0
length	7 mm
Logic integrated circuit type	LOW SKEW CLOCK DRIVER
Humidity sensitivity level	3
Number of functions	1
Number of inverted outputs
Number of terminals	32
Actual output times	10
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	LQFP
Encapsulate equivalent code	QFP32,.35SQ,32
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE
Peak Reflow Temperature (Celsius)	240
power supply	2.5/3.3 V
Prop。Delay @ Nom-Sup	5 ns
propagation delay (tpd)	5 ns
Certification status	Not Qualified
Same Edge Skew-Max（tskwd）	0.175 ns
Maximum seat height	1.6 mm
Maximum supply voltage (Vsup)	3.6 V
Minimum supply voltage (Vsup)	3 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING
Terminal pitch	0.8 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	20
width	7 mm
Base Number Matches	1

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Low Skew, ÷1, ÷2 LVCMOS/LVTTL

Clock Generator

ICS87946I-147

DATA SHEET

General Description

The ICS87946I-147 is a low skew, ÷1, ÷2

LVCMOS/LVTTL Clock Generator and a member of

HiPerClockS™

the HiPerClockS™ family of High Performance Clock

Solutions from IDT. The ICS87946I-147 has two

selectable single ended clock inputs. The single ended

clock inputs accept LVCMOS or LVTTL input levels. The low

impedance LVCMOS/LVTTL outputs are designed to drive 50Ω

series or parallel terminated transmission lines. The effective fanout

can be increased from 10 to 20 by utilizing the ability of the outputs

to drive two series terminated lines.

Features

•

Ten single ended LVCMOS/LVTTL outputs,

7Ω typical output impedance

Selectable LVCMOS/LVTTL CLK0 and CLK1 inputs

CLK0 and CLK1 can accept the following input levels:

LVCMOS and LVTTL

Maximum input frequency: 250MHz

Bank skew: 30ps (maximum)

Output skew: 175ps (maximum)

Part-to-part skew: 850ps (maximum)

Multiple frequency skew: 200ps (maximum)

3.3V core, 3.3V or 2.5V output supply modes

-40°C to 85°C ambient operating temperature

Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

ICS

The divide select inputs, DIV_SELx, control the output frequency of

each bank. The outputs can be utilized in the ÷1, ÷2 or a

combination of ÷1 and ÷2 modes. The master reset input, MR/nOE,

resets the internal frequency dividers and also controls the active

and high impedance states of all outputs.

The ICS87946I-147 is characterized at full 3.3V for input V

DD,

and

mixed 3.3V and 2.5V for output operating supply mode. Guaranteed

bank, output and part-to-part skew characteristics make the

ICS87946I-147 ideal for those clock distribution applications

demanding well defined performance and repeatability.

Block Diagram

CLK_SEL

Pulldown

CLK0

Pullup

CLK1

Pullup

Pin Assignment

MR/nOE

GND

DDA

QA0

QA1

QA2

÷1

÷2

QA[0:2]

CLK_SEL

32 31 30 29 28 27 26 25

10 11 12 13 14 15 16

QC2

GND

QC0

QC1

DDC

QC3

DDC

GND

QB0

DDB

QB1

GND

QB2

DDB

DDC

DIV_SELA

Pulldown

DIV_SELB

Pulldown

DIV_SELC

Pulldown

MR/nOE

Pulldown

CLK0

CLK1

QB[0:2]

DIV_SELA

DIV_SELB

DIV_SELC

GND

QC[0:3]

ICS87946I-147

32-Lead LQFP

7mm x 7mm x 1.4mm package body

Y Package

Top View

ICS87946AYI-147 REVISION A AUGUST 7, 2009

87946AYI-147T Related Products

	87946AYI-147T	87946AYI-147
Description	Low Skew Clock Driver, 87946 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32	Low Skew Clock Driver, 87946 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32
Is it lead-free?	Contains lead	Contains lead
Is it Rohs certified?	incompatible	incompatible
Maker	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)
Parts packaging code	QFP	QFP
package instruction	7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32	7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC-HD, LQFP-32
Contacts	32	32
Reach Compliance Code	not_compliant	not_compliant
ECCN code	EAR99	EAR99
series	87946	87946
Input adjustment	MUX	MUX
JESD-30 code	S-PQFP-G32	S-PQFP-G32
JESD-609 code	e0	e0
length	7 mm	7 mm
Logic integrated circuit type	LOW SKEW CLOCK DRIVER	LOW SKEW CLOCK DRIVER
Humidity sensitivity level	3	3
Number of functions	1	1
Number of terminals	32	32
Actual output times	10	10
Maximum operating temperature	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C
Output characteristics	3-STATE	3-STATE
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LQFP	LQFP
Encapsulate equivalent code	QFP32,.35SQ,32	QFP32,.35SQ,32
Package shape	SQUARE	SQUARE
Package form	FLATPACK, LOW PROFILE	FLATPACK, LOW PROFILE
Peak Reflow Temperature (Celsius)	240	240
power supply	2.5/3.3 V	2.5/3.3 V
Prop。Delay @ Nom-Sup	5 ns	5 ns
propagation delay (tpd)	5 ns	5 ns
Certification status	Not Qualified	Not Qualified
Same Edge Skew-Max（tskwd）	0.175 ns	0.175 ns
Maximum seat height	1.6 mm	1.6 mm
Maximum supply voltage (Vsup)	3.6 V	3.6 V
Minimum supply voltage (Vsup)	3 V	3 V
Nominal supply voltage (Vsup)	3.3 V	3.3 V
surface mount	YES	YES
Temperature level	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn85Pb15)	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING	GULL WING
Terminal pitch	0.8 mm	0.8 mm
Terminal location	QUAD	QUAD
Maximum time at peak reflow temperature	20	20
width	7 mm	7 mm
Base Number Matches	1	1

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