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CY28346 Datasheet(PDF) 7 Page - Cypress Semiconductor

Part No. CY28346
Description  Clock Synthesizer with Differential CPU Outputs
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY28346 Datasheet(HTML) 7 Page - Cypress Semiconductor

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CY28346
Document #: 38-07331 Rev. *B
Page 7 of 20
Buffer Characteristics
Current Mode CPU Clock Buffer Characteristics
The current mode output buffer detail and current reference
circuit details are contained in the previous table of this data
sheet. The following parameters are used to specify output
buffer characteristics:
1. Output impedance of the current mode buffer circuit – Ro
(see Figure 4).
2. Minimum and maximum required voltage operation range
of the circuit – Vop (see Figure 4).
3. Series resistance in the buffer circuit – Ros (see Figure 4).
4. Current accuracy at given configuration into nominal test
load for given configuration.
2.4V
0.4V
3.3V
0V
Tr
Tf
1.5V
3.3V signals
tDC
Probe
Output under Test
Load Cap
-
-
Figure 3. For Single-ended Output Signals
1.2V
0V
Iout
Iout
Ros
Ro
VDD3 (3.3V +/- 5%)
Vout = 1.2V max
Vout
Slope ~ 1/R
0
Figure 4. Buffer Characteristics
Table 4. Host Clock (HCSL) Buffer Characteristics
Characteristic
Min.
Max.
Ro
3000
Ω (recommended)
N/A
Ros
Vout
N/A
1.2V


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