EEWORLDEEWORLDEEWORLD

Part Number

Search

Z9974CA

Description
Clock Driver, CMOS, PQFP52,
Categorylogic    logic   
File Size60KB,9 Pages
ManufacturerCypress Semiconductor
Download Datasheet Parametric View All

Z9974CA Overview

Clock Driver, CMOS, PQFP52,

Z9974CA Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerCypress Semiconductor
Parts packaging codeQFP
package instructionTQFP-52
Contacts52
Reach Compliance Codecompli
Input adjustmentMUX
JESD-30 codeS-PQFP-G52
JESD-609 codee0
length10 mm
Logic integrated circuit typePLL BASED CLOCK DRIVER
MaximumI(ol)0.02 A
Humidity sensitivity level1
Number of functions1
Number of inverted outputs
Number of terminals52
Actual output times14
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output characteristics3-STATE
Package body materialPLASTIC/EPOXY
encapsulated codeTQFP
Encapsulate equivalent codeTQFP52,.47SQ,25
Package shapeSQUARE
Package formFLATPACK, THIN PROFILE
Peak Reflow Temperature (Celsius)235
power supply3.3 V
Prop。Delay @ Nom-Su0.1 ns
Certification statusNot Qualified
Same Edge Skew-Max(tskwd)0.25 ns
Maximum seat height1.2 mm
Maximum supply voltage (Vsup)3.465 V
Minimum supply voltage (Vsup)3.135 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationQUAD
Maximum time at peak reflow temperatureNOT SPECIFIED
width10 mm
minfmax125 MHz
Z9974
3.3V, 125MHz, Multi-Output Zero Delay Buffer
Product Features
Output Frequency up to 125MHz
TM
TM
Processors
Supports Power PC , and Pentium
15 Clock Output: Frequency Configurable
Two Reference Clock Inputs for Dynamic Toggling
Output Tri-State Control
Spread Spectrum Compatible
3.3V Power Supply
Pin Compatible with MPC974
Industrial Temp. Range: -40°C to +85°C
52 Pin TQFP Package
Feedback Ratio Selection Table
Inputs
VCO_Sel
0
0
0
0
1
1
1
1
fselFB0
0
0
1
1
0
0
1
1
fselFB1
0
1
0
1
0
1
0
1
Outputs
QFB
VCO/8
VCO/12
VCO/16
VCO/24
VCO/16
VCO/24
VCO/32
VCO/48
Table 1
Product Description
The Z9974 is a low cost 3.3V zero delay clock driver for
high speed signal buffering and redistribution.
It provides the designer with the flexibility of selecting
various Output/Input Frequency ratios selected by fsela,
fselb, fselc, fselFB(0:1), and VCO_sel input settings.
The Z9974 integrates PLL technology for Zero delay
propagation from Input to Output. The PLL feedback is
externally available for propagation delay tuning and
divide ratio alternatives as per table 1.
The Z9974 has three banks of outputs with independent
divider stages. These dividers allow the banks to have
different frequencies as per table 2.
TCLK0 and TCLK1 one are selectable input reference
clocks and may be toggled dynamically during operation
to provide modulation and phase shifting designs.
This device includes a Master Reset signal, which
disables the outputs into Tristate (Hi-Z) mode, and reset
all internal digital circuitry (excluding the PLL).
An Output Enable, OE, input pin is available for shutting
Qa(0:4), Qb(0:4), and Qc(0:3) outputs in a low state. All
outputs are held low with input clock turned off.
Pin Configuration
Qb0
VDDb
NC
VSSc
Qc3
VDDc
QC2
VSSc
QC1
VDDc
QC0
VSSc
VCO_Sel
52 51 50 49 48 47 46 45 44 43 42 41 40
VSSA
MR#
OE
fselb
fselc
PLL_EN
fsela
TClk_Sel
TClk0
TClk1
NC
VDDI
VDDA
1
2
3
4
5
6
7
8
9
10
11
12
13
39
38
37
36
35
34
33
32
31
30
29
28
27
VSSb
QB1
VDDb
Qb2
VSSb
Qb3
VDDb
Qb4
FB_IN
VSSFB
QFB
VDDFB
NC
Z9974
14 15 16 17 18 19 20 21 22 23 24 25 26
VDDa
Qa0
VSSa
Qa1
VDDa
Qa2
fselFB1
VSSa
Qa3
VDDa
Qa4
VSSI
fselFB0
Cypress Semiconductor Corporation
525 Los Coches St.
Milpitas, CA 95035. Tel: 408-263-6300, Fax: 408-263-6571
http://www.cypress.com
Document#: 38-07090 Rev. *A
06/18/2001
Page 1 of 9
FTF impression_2
A very interesting report on smart grids, which is also a hot topic nowadays....
kernelpanic NXP MCU
How to use MSP430G2553 as UART?
I have been working on UART for several days, but I can't figure it out, so I use the MSP430G2553 bare microcontroller. Is it enough to just connect the first two jumper caps of J3 vertically, connect...
SF很厉害 Microcontroller MCU
Participate in the HELPER2416 development board scholarship program: learning materials + tool sharing
[i=s]This post was last edited by foxpro2005 on 2014-7-8 01:30[/i] [align=left][color=Magenta][backcolor=rgb(255, 255, 255)][font=Verdana][size=14px][font=Microsoft Yahei, Hei, Tahoma, SimHei, sans-se...
foxpro2005 Embedded System
DSP peripheral circuit diagram solution (experts please come in to support)
I would like to ask for help on anything I don’t understand, and I will slowly sort out and tell you what I know, thank you!This is a power supply diagram. What are the 12345 numbers and what do they ...
yinhe2 DSP and ARM Processors
Microcontroller Peripheral Circuit Design by Sha Zhanyou PDF
[color=#333333][font=Verdana][size=3]In general, it is the design and debugging of the peripheral circuit of the single-chip microcomputer. The content included is most suitable for beginners to refer...
jujuyaya222 Download Centre
Show off the work site 2,
I saw that there was an activity on the forum to share the working environment, so I also wanted to participate. I hope everyone will support me....
05210324kw MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2376  1140  2294  1929  1142  48  23  47  39  7 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号