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CY7B9911V
(Rev.:1999)

High-Speed Low-Voltage Programmable Skew Clock Buffer

Cypress Semiconductor 

CY7B9911V

3.3V RoboClock+

1Fx

2Fx

(N/A)

LL

LM

LH

ML

MM

MH

HL

HM

HH

(N/A)

(N/A)

(N/A)

FBInput

REFInput

3Fx

4Fx

LM

– 6tU

LH

(N/A)

– 4tU

– 3tU

ML

(N/A)

– 2tU

– 1tU

MM

(N/A)

MH

(N/A)

HL

HM

LL/HH

HH

0tU

+1tU

+2tU

+3tU

+4tU

+6tU

DIVIDED

INVERT

7B9911V–3

Figure 1. Typical Outputs with FB Connected to a Zero-Skew Output[4]

Test Mode

Maximum Ratings

The TEST input is a three-level input. In normal system oper-

ation, this pin is connected to ground, allowing the

CY7B9911V to operate as explained briefly above (for testing

purposes, any of the three-level inputs can have a removable

jumper to ground, or be tied LOW through a 100Ω resistor. This

will allow an external tester to change the state of these pins.)

If the TEST input is forced to its MID or HIGH state, the device

will operate with its internal phase locked loop disconnected,

and input levels supplied to REF will directly control all outputs.

Relative output to output functions are the same as in normal

mode.

In contrast with normal operation (TEST tied LOW). All outputs

will function based only on the connection of their own function

select inputs (xF0 and xF1) and the waveform characteristics

of the REF input.

(Above which the useful life may be impaired. For user guide-

lines, not tested.)

Storage Temperature ................................. –65°C to +150°C

Ambient Temperature with

Power Applied............................................. –55°C to +125°C

Supply Voltage to Ground Potential................–0.5V to +7.0V

DC Input Voltage ............................................–0.5V to +7.0V

Output Current into Outputs (LOW)............................. 64 mA

Static Discharge Voltage ........................................... >2001V

(per MIL-STD-883, Method 3015)

Latch-Up Current ..................................................... >200 mA

Operating Range

Range

Commercial

Ambient

Temperature

0°C to +70°C

VCC

3.3V ± 10%

Note:

4. FB connected to an output selected for “zero” skew (i.e., xF1 = xF0 =

MID).

3

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