CY2291F Cypress Semiconductor Corp, CY2291F Datasheet - Page 12

• Manufacturer Part Number: CY2291F
• Description: IC 3PLL EPROM CLOCK GEN 20-SOIC
• Manufacturer: Cypress Semiconductor Corp
• Type: Clock Generator, Fanout Distributionr

Specifications of CY2291F

• Pll: Yes
• Input: Clock, Crystal
• Output: Clock, Crystal
• Number Of Circuits: 1
• Ratio - Input:output: 1:8
• Differential - Input:output: No/No
• Frequency - Max: 66.6MHz, 90MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3.3V, 5V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Frequency-max: 66.6MHz/90MHz
• For Use With: CY3093 - SOCKET ADAPTER FTG FOR CY2291F428-1457 - KIT DEV FTG PROGRAMMING KIT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1392

Switching Waveforms
Test Circuit
Note
Document Number: 38-07189 Rev. *E
40. The CY2291 has weak pull downs on all outputs (except 32K). Hence, when a three-state condition is forced on the outputs, the output pins are pulled LOW.
THREE-STATE
OUTPUTS
OUTPUT
RELATED
OUTPUT
OE
ALL
SELECT
CLK
CLK
CPU
Figure 2. All Outputs, Duty Cycle and Rise/Fall Time
V
V
DD
DD
0.1 F
0.1 F
OLD SELECT
t
3
Figure 3. Output Three-State Timing
t
Figure 4. CLK Outputs Jitter and Skew
5
Figure 5. CPU Frequency Change
F
old
t
9A
t
2
OUTPUTS
t
7
NEW SELECT STABLE
GND
t
8
& t
t
1
10
t
4
F
[4]
new
C
LOAD
CLK out
t
6
Page 12 of 17
CY2291
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