Datasheet > 83948I

83948I

更新时间： 2024-09-22 01:07:07

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
13页	291K
描述
Low Skew, 1-to-12 Differential-to- LVCMOS/LVTTL Fanout Buffer

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83948I 数据手册

83948I

Low Skew, 1-to-12 Differential-to-

LVCMOS/LVTTL Fanout Buffer

Datasheet

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES MAY 6, 2017

General Description

Features

The 83948I is a low skew, 1-to-12 Differential-to-LVCMOS/LVTTL

Fanout Buffer and a member of the family of High Performance

Clock Solutions from IDT. The 83948I has two selectable clock

inputs. The CLK, nCLK pair can accept most standard differential

input levels. The LVCMOS_CLK can accept LVCMOS or LVTTL

input levels. The low impedance LVCMOS/LVTTL outputs are

designed to drive 50 series or parallel terminated transmission

lines. The effective fanout can be increased from 12 to 24 by

utilizing the ability of the outputs to drive two series terminated

lines.

• Twelve LVCMOS/LVTTL outputs

• Selectable differential CLK/nCLK or LVCMOS/LVTTL clock

input

• CLK/nCLK pair can accept the following differential

input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL

• LVCMOS_CLK supports the following input types: LVCMOS,

LVTTL

• Maximum output frequency: 250MHz

• Output skew: 350ps (maximum)

• Part-to-part skew: 1.5ns (maximum)

• 3.3V core, 3.3V output

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) package

• For drop in replacement part use 83948i-147

The 83948I is characterized at full 3.3V core/3.3V output.

Guaranteed output and part-to-part skew characteristics make the

83948I ideal for those clock distribution applications demanding

well defined performance and repeatability.

Pin Assignment

Pullup

CLK_EN

32 31 30 29 28 27 26 25

Pullup

LVCMOS_CLK

CLK_SEL

GND

Pullup

CLK

nCLK

LVCMOS_CLK

CLK

Pulldown

V^DDO

Pullup

CLK_SEL

nCLK

CLK_EN

GND

V^DD

Block Diagram

V^DDO

GND

10 11 12 13 14 15 16

83948I

32-Lead LQFP

7mm x 7mm x 1.4mm package body

Y Package

Top View

Q10

Q11

Pullup

May 19, 2016

12 3 4 5 6 7...13

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