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83940DYLFT

Description
Clock Drivers & Distribution 18 LVCMOS OUT BUFFER
Categorysemiconductor    Analog mixed-signal IC   
File Size221KB,16 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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83940DYLFT Overview

Clock Drivers & Distribution 18 LVCMOS OUT BUFFER

83940DYLFT Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerIDT (Integrated Device Technology, Inc.)
Product CategoryClock Drivers & Distribution
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseTQFP-32
PackagingReel
Height1.4 mm
Length7 mm
Width7 mm
Moisture SensitiveYes
Factory Pack Quantity2000
Unit Weight0.002568 oz
Low Skew, 1-to-18
LVPECL-TO-LVCMOS / LVTTL Fanout Buffer
G
ENERAL
D
ESCRIPTION
The 83940D is a low skew, 1-to-18 LVPECL-to-LVC-
MOS/LVTTL Fanout Buffer. The 83940D has two select-
able clock inputs. The PCLK, nPCLK pair can accept
LVPECL, CML, or SSTL input levels. The LVCMOS_
CLK can accept LVCMOS or LVTTL input levels. The low
impedance LVCMOS/LVTTL outputs are designed to drive 50Ω
series or parallel terminated transmission lines.
The 83940D is characterized at full 3.3V and 2.5V or
mixed3.3V core, 2.5V output operating supply modes.
Guaranteed output and part-to-part skew characteristics make
the 83940D ideal for those clock distribution applications
demanding well defined performance and repeatability.
83940D
DATASHEET
F
EATURES
18 LVCMOS/LVTTL outputs
Selectable LVCMOS_CLK or LVPECL clock inputs
PCLK, nPCLK supports the following input types:
LVPECL, CML, SSTL
LVCMOS_CLK accepts the following input levels:
LVCMOS or LVTTL
Maximum output frequency: 250MHz
Output skew: 150ps (maximum)
Part to part skew: 750ps (maximum)
Additive phase jitter, RMS: < 0.03ps (typical)
Full 3.3V and 2.5V or mixed 3.3V core, 2.5V output
supply modes
0°C to 70°C ambient operating temperature
Lead-Free package available
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
V
DDO
GND
Q0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Q17
Q16
Q15
GND
Q14
Q13
Q12
V
DDO
Q1
Q2
Q3
Q4
Q5
32 31 30 29 28 27 26 25
GND
GND
LVCMOS_CLK
CLK_SEL
PCLK
nPCLK
V
DD
V
DDO
24
23
22
Q6
Q7
Q8
V
DD
Q9
Q10
Q11
GND
ICS83940D
21
20
19
18
17
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Pacakge
Top View
83940D REVISION B 3/25/15
1
©2015 Integrated Device Technology, Inc.
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