cy2v995 Cypress Semiconductor Corporation., cy2v995 Datasheet

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cy2v995

Manufacturer Part Number
cy2v995
Description
2.5/3.3v 200-mhz Multi-output Zero Delay Buffer
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

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Cypress Semiconductor Corporation
Document #: 38-07435 Rev. *A
Features
• 2.5V or 3.3V operation
• Split output bank power supplies
• Output frequency range: 6 MHz to 200 MHz
• Output-output skew: < 150 ps
• Cycle-cycle jitter: < 100 ps
• Selectable positive or negative edge synchronization
• 8 LVTTL outputs driving 50Ω terminated lines
• LVCMOS/LVTTL over-voltage tolerant reference input
• Selectable phase-locked loop (PLL) frequency range
• (1-6,8,10,12)x multiply and (1/2,1/4)x divide ratios
• Spread-Spectrum-compatible
• Power-down mode
• Industrial temperature range: –40°C to +85°C
• 44-pin TQFP package
Block Diagram
and lock indicator
2F1:0
3F1:0
4F1:0
DS1:0
1F1:0
REF
PD#
FB
3
/N
3
TEST
3
3
3
3
3
PLL
PE
/K
/M
FS
3
VDDQ4
VDDQ1
sOE#
3901 North First Street
VDDQ3
1Q0
1Q1
2Q0
2Q1
3Q0
3Q1
4Q0
4Q1
LOCK
2.5/3.3V 200-MHz Multi-Output
Description
The CY2V995 is a low-voltage, low-power, eight output,
200-MHz clock driver. It features function necessary to
optimize the timing of high-performance computer and
communication systems.
The user can program the frequency of the output banks
through nF[0:1] and DS[0:1] pins. Any one of the outputs can
be connected to feedback input to achieve different reference
frequency
input-output delay.
The device also features split output bank power supplies
which enable the user to run two banks (1Qn and 2Qn) at a
power supply level different from that of the other two banks
(3Qn and 4Qn). Additionally, the PE pin controls the synchro-
nization of the output signals to either the rising or the falling
edge of the reference clock.
Pin Configuration
VDDQ4
VDDQ4
sOE#
PD#
VSS
VSS
VSS
4Q1
4Q0
4F1
PE
multiplication
1
2
3
4
5
6
7
8
9
10
11
San Jose
12 13 14 15 16 17 18 19 20 2122
44 43 42 41 40 39 38 37 36 35 34
CY2V995
,
CA 95134
Zero Delay Buffer
and
divide
Revised January 19, 2004
ratios
33
32
31
30
29
28
27
26
25
24
23
408-943-2600
CY2V995
1F0
DS1
DS0
LOCK
VDDQ1
VDDQ1
1Q0
1Q1
VSS
VSS
VSS
and
zero
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cy2v995 Summary of contents

Page 1

... Cypress Semiconductor Corporation Document #: 38-07435 Rev. *A 2.5/3.3V 200-MHz Multi-Output Description The CY2V995 is a low-voltage, low-power, eight output, 200-MHz clock driver. It features function necessary to optimize the timing of high-performance computer and communication systems. The user can program the frequency of the output banks through nF[0:1] and DS[0:1] pins. Any one of the outputs can ...

Page 2

... Power DD 9-12, 22-25 PWR Power SS Device Configuration The outputs of the CY2V995 can be configured to run at frequencies ranging from 6 MHz to 200 MHz. The feedback input divider is controlled by the 3-level DS[0:1] pins as indicated in Table 1. Notes: 1. ‘PD’ indicates an internal pull-down and ‘PU’ indicates an internal pull-up. ...

Page 3

... Table 7. PE Settings The CY2V995 features split power supply buses for Banks 1 and 2, Bank 3 and Bank 4, which enables the user to obtain both 3.3V and 2.5V output signals from one device. The core 2 power supply (V than that on any one of the output power supplies. [6] 1 Table 8 ...

Page 4

... Max, (sOE 12mA, (nQ[0:1 2mA (LOCK –12mA,(nQ[0:1 –2mA (LOCK) OH VDD = Max, TEST = MID, REF = LOW, sOE# = LOW, Outputs not loaded PD#, sOE# = LOW Test,nF[1:0],DS[1:0] = HIGH V = Max DD @100 MHz CY2V995 Min. Max. Unit 2.25 2.75 V 2.97 3. – 0.3 – – 0 5.5 V 4.6 V – ...

Page 5

... LOW, sOE# = LOW, Outputs not loaded PD#, sOE# = LOW Test,nF[1:0],DS[1:0] = HIGH V = Max DD @100 MHz Condition 0.8V – 2.0V HIGH or LOW FS = LOW FS = MID FS = HIGH Condition Skew between the earliest and the latest output transitions within the same bank. CY2V995 Min. Max. Unit 2.97 3.63 V – 0.8 V 2.0 – –-0.6 – V ...

Page 6

... Measured at 2.0V for VDD = 3.3V and at 1.7V for VDD = 2.5V. Measured at 0.8V for VDD = 3.3V and at 0.7V for VDD = 2.5V. Measured at 0.8V-2.0V for VDD = 3.3V and 0.7V–1.7V for VDD = 2.5V Divide by 1 output frequency divide by any Divide by 1 output frequency M/ divide by any CY2V995 Min. Max. Unit – 200 ps – 200 ps – ...

Page 7

... AC Timing Definitions t PWH REF OTHER Q INVERTED Q REF DIVIDED BY 2 REF DIVIDED BY 4 Document #: 38-07435 Rev REF t PWL t t 0DCV 0DCV t t SKEWPR SKEWPR t SKEW0,1 t SKEW0 SKEW1 SKEW1 t SKEW3 t SKEW3 t SKEW1,3,4 CY2V995 t CCJ1-12 t SKEW3 t SKEW1,3,4 Page [+] Feedback ...

Page 8

... For All Other Outputs Figure 1. t OFALL 1.7V VTH =1.25V 0.7V Figure 2. ≤ 1ns 2.5V 1.7V VTH =1.25V 0.7V 2.5V LVTTL INPUT TEST WAVEFORM Figure 3. Package Type CY2V995 150Ω 20pF 150Ω ORISE OFALL t PWH t PWL 2.5V LVTTL OUTPUT WAVEFORM ≤ 1ns ≤ 1ns 0V Product Flow Commercial, 0° ...

Page 9

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. CY2V995 51-85155-*A ...

Page 10

... Document History Page Document Title:CY2V995 2.5/3.3V 200-MHz Multi-output Zero Delay Buffer Document Number: 38-07435 REV. ECN No. Issue Date ** 122627 01/13/03 *A 200501 See ECN Document #: 38-07435 Rev. *A Orig. of Description of Change Change RGL New Data Sheet Changed Pin 5 from VDD to VDDQ4, Pin 16 from VDD to VDDQ3 and Pin ...

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