cy2v9950 Cypress Semiconductor Corporation., cy2v9950 Datasheet

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cy2v9950

Manufacturer Part Number
cy2v9950
Description
200-mhz Multi-output Zero Delay Buffer
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07436 Rev. *A
Features
Block Diagram
• 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
• Selectable phase-locked loop (PLL) frequency range
• 8 LVTTL outputs driving 50Ω terminated lines
• LVCMOS/LVTTL Over-voltage tolerant reference input
• 2x, 4x multiply and (1/2)x, (1/4)x divide ratios
• Spread-Spectrum-compatible
• Pin-compatible with IDT5V9950 and IDT5T9950
• Industrial temperature range: –40°C to +85°C
• 32-pin TQFP package
2F1:0
3F1:0
4F1:0
1F1:0
R EF
FB
2.5/3.3V 200-MHz Multi-Output Zero Delay Buffer
TEST
3
3
3
3
3
PLL
/ M
PE
/ K
FS
3
VDDQ 4
VDDQ 1
3901 North First Street
sO E#
VDDQ 3
1Q 0
1Q 1
2Q 0
2Q 1
3Q 0
3Q 1
4Q 0
4Q 1
Functional Description
The CY2V9950 is a low-voltage, low-power, eight-output,
200-MHz clock driver. It features functions necessary to
optimize the timing of high performance computer and
communication systems.
The user can program the output banks through 3F[0:1] and
4F[0:1]pins. Any one of the outputs can be connected to
feedback input to achieve different reference frequency multi-
plication and divide ratios and zero 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
PE
VSS
4Q0
3F1
4F1
4Q1
4F0
San Jose
1
2
3
4
5
6
7
8
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
CY2V9950
,
CA 95134
Revised August 11, 2004
24
23
22
21
20
19
18
17
CY2V9950
408-943-2600
1F1
1F0
sOE#
VDDQ1
1Q0
1Q1
VSS
VSS
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cy2v9950 Summary of contents

Page 1

... M 3 Cypress Semiconductor Corporation Document #: 38-07436 Rev. *A Functional Description The CY2V9950 is a low-voltage, low-power, eight-output, 200-MHz clock driver. It features functions necessary to optimize the timing of high performance computer and communication systems. The user can program the output banks through 3F[0:1] and 4F[0:1]pins. Any one of the outputs can be connected to feedback input to achieve different reference frequency multi- plication and divide ratios and zero input-output delay ...

Page 2

... VSS Power PWR 28 Device Configuration The outputs of the CY2V9950 can be configured to run at frequencies ranging from 6 to 200 MHz. Banks 3 and 4 output dividers are controlled by 3F[1:0] and 4F[1:0] as indicated in Table 1 and 2 respectively. Table 1. Output Divider Settings – Bank 3 3F[1:0] K – Bank3 Output Divider ...

Page 3

... PE Synchronization L H The CY2V9950 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 power supply (VDD) must be set a level which is equal or higher than that on any one of the output power supplies. ...

Page 4

... mA, (nQ[0:1 –12 mA, (nQ[0:1]) OH VDD = Max, TEST = MID, REF = LOW, sOE# = LOW, outputs not loaded @100 MHz Condition 0.8V – 2.0V HIGH or LOW FS = LOW FS = MID FS = HIGH CY2V9950 µA – 200 µA –50 50 µA –200 – µA –25 – µA – 100 – ...

Page 5

... 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 Divide by 1 output frequency M/ divide CY2V9950 Min. Max. Unit 6 200 MHz 200 400 MHz ...

Page 6

... AC Timing Definitions t PWH REF OTHER Q INVERTED Q REF DIVIDED BY 2 REF DIVIDED BY 4 Document #: 38-07436 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 CY2V9950 t CCJ1-12 t SKEW3 t SKEW1,3,4 Page [+] Feedback ...

Page 7

... For All Other Outputs Figure 1. t OFALL 1.7V VTH =1.25V 0.7V Figure 2. LVTTL Output Test Waveforms ≤ 1ns 2.5V 1.7V VTH =1.25V 0.7V Figure 3. LVTTL Input Test Waveforms Package Type CY2V9950 150Ω 20pF 150Ω ORISE OFALL t PWH t PWL 2.5V LVTTL OUTPUT WAVEFORM ≤ 1ns ≤ 1ns 0V 2 ...

Page 8

... The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. CY2V9950 51-85063-B ...

Page 9

... Document History Page Document Title:CY2V9950 2.5/3.3V 200-MHz Multi-Output Zero Delay Buffer Document Number: 38-07436 REV. ECN No. Issue Date ** 122628 01/10/03 *A 252355 See ECN RGL/GGK Document #: 38-07436 Rev. *A Orig. of Change Description of Change RGL New Data Sheet Fixed Note 3 definition. CY2V9950 Page [+] Feedback ...

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