1.2 Pin Descriptions

Table 1-1. SY75712 Pin Descriptions

Pin #

Pin Name

Type

Functional Description

Input Reference

1

IN

I

LVCMOS Input Reference. Input frequency range >0 Hz to 250 MHz. Input has a fail-safe circuit to prevent oscillation if the input is not driven.

>0 Hz because OE is synchronous and requires three to five clock cycles to enable/disable the output. The device can transfer a DC level, but it needs three to five cycles for output to be enabled/disabled.

This pin is pulled down internally with 100 kΩ to 300 kΩ resistor.

Output Clocks

3

8

OUT0

OUT1

O

Ultra-Low Additive Jitter LVCMOS Outputs. Output frequency range >0 Hz to 250 MHz. These outputs have an embedded series resistance of 50Ω (at 1.2V VDD)

>0 Hz because OE is synchronous and requires three to five clock cycles to enable/disable the output. The device can transfer a DC level, but it needs three to five cycles for output to be enabled/disabled.

Control Input

2

OE

I

Output Enable (Synchronous). When low, the outputs are low; when high, the outputs are enabled. This pin is pulled down internally with 100 kΩ to 300 kΩ resistors.

Power and Ground

6

VDD

P

Positive Supply Voltage. Connect to supply of 1.2V to 1.8V.

4

GND

P

Ground. Connect to ground.

No Connect

5, 7

NC

N/A

No connect. Leave open or connect to ground.

Table 1-2. SY75714 Pin Descriptions

Pin #

Pin Name

Type

Functional Description

Input Reference

1

IN

I

LVCMOS Input Reference. Input frequency range >0 Hz to 250 MHz. Input has a fail-safe circuit to prevent oscillation if the input is not driven.

>0 Hz because OE is synchronous and requires three to five clock cycles to enable/disable the output. The device can transfer a DC level, but it needs three to five cycles for output to be enabled/disabled.

This pin is pulled down internally with 100 kΩ to 300 kΩ resistor.

Output Clocks

3

8

5

7

OUT0

OUT1

OUT2

OUT3

O

Ultra-Low Additive Jitter LVCMOS Outputs. Output frequency range >0 Hz to 250 MHz. These outputs have an embedded series resistance of 50Ω (at 1.2V VDD).

>0 Hz because OE is synchronous and requires three to five clock cycles to enable/disable the output. The device can transfer a DC level, but it needs three to five cycles for output to be enabled/disabled.

Control Input

2

OE

I

Output Enable (Synchronous). When low, the outputs are low; when high, the outputs are enabled. This pin is pulled down internally with 100 kΩ to 300 kΩ resistors.

Power and Ground

6

VDD

P

Positive Supply Voltage. Connect to supply of 1.2V to 1.8V.

4

GND

P

Ground. Connect to ground.