CY2254A Cypress Semiconductor, CY2254A Datasheet - Page 3

• Manufacturer Part Number: CY2254A
• Description: Pentium Processor Compatible Clock Synthesizer/Driver
• Manufacturer: Cypress Semiconductor

PCI Clock Driver Strength Requirements
CPU Clock Driver Strength Requirements
Operating Conditions
Electrical Characteristics
Document #: 38-07203 Rev. *A
V
T
C
f
t
V
V
V
V
I
I
I
I
• Matched impedances on both rising and falling edges on
• Output impedance: 25 (typical) measured at 1.5V
• Maximum output impedance: 40 measured at 1.5V
• Matched impedances on both rising and falling edges on
• Output impedance: 25 (typical) measured at 1.5V
• Maximum output impedance: 40 measured at 1.5V
Parameter
(REF)
PU
IH
IL
OZ
DD
A
DD
L
IH
IL
OH
OL
the output drivers
the output drivers
Parameter
[4]
[4]
High-level Input Voltage
Low-level Input Voltage
High-level Output Voltage
Low-level Output Voltage
Input High Current
Input Low Current
Output Leakage Current
Power Supply Current
Supply Voltage 3.3V
Supply Voltage 5.0V
Operating Ambient Temperature
Max. Capacitive Load on
Reference Frequency, Oscillator Nominal Value
Power-up time for all VDD's to reach minimum specified voltage (power
ramps must be monotonic)
Description
CPUCLK
PCICLK
IOCLK
KBDCLK / USBCLK
REF0
REF1
[3]
V
DD
= 3.135V
Except Crystal Inputs
Except Crystal Inputs
V
V
V
V
Three-state
V
V
V
V
DD
DD
IH
IL
DD
DD
IH
IL
= 0 V, V
= V
= 0 V, V
Description
= V
= V
= V
= 3.6V, V
= 5.5V, V
3.6V, or 5.0V 10%, T
DD,
DD,
DD
DD
V
Min.
Min.
DD
V
DD
DD
DD
IN
IN
= 3.3V
= 5.0V
= 3.3V
= 0 or V
= 0 or V
= 5.0V
I
I
I
I
I
I
I
I
OH
OH
OH
OH
OL
OL
OL
OL
Test Conditions
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Supply Voltage
Input Voltage
Storage Temperature (Non-Condensing)
Junction Temperature............................................... +150 C
Package Power Dissipation.............................................. 1W
Static Discharge Voltage............................................ >2000V
(per MIL-STD-883, Method 3015)
= 6 mA
= 12 mA
= 4 mA
= 8 mA
= 6 mA
= 12 mA
= 4 mA
= 8 mA
DD
DD
A
= 0 C to +70 C
CPUCLK
PCICLK, REF0
KBDCLK, USBCLK
REF1
CPUCLK
PCICLK, REF0
KBDCLK, USBCLK
REF1
14.318
3.135
Min.
0.05
4.5
0
14.318
Min.
Max.
2.0
2.4
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3.6
5.5
70
20
30
20
20
30
15
50
10
0.5V to V
65 C to +150 C
CY2254A
Max.
0.5 to +7.0V
100
250
+10
150
0.8
0.4
10
90
5
Page 3 of 8
DD
MHz
Unit
ms
pF
V
V
C
+ 0.5
Unit
mA
mA
V
V
V
V
A
A
A
A
A