Preliminary Data Sheet #: SG053

Page 5 of 16

Rev: P01

Date: 08/05/02

Pin Description

Table 8

Pin #

Pin Name

Pin Information

Note

1

ENABLE/TRI-STATE

VCXO Enable. (Enable = 0, Disable = 1 = CMOS Outputs Tri-stated)

9.0

2

TCK

No Connection, Internal Factory Programming Input.

8.0

3

TDO

No Connection, Internal Factory Programming Input.

8.0

4

REF

A

10 kHz, TTL/CMOS Reference Frequency Input.

5

SEL

AB

Input Reference Select Pin. (REFA = 0, REFB = 1)

9.0

6

RESET

RESET. (RESET = 1)

9.0

7

REF

B

10 kHz, TTL/ CMOS Reference Frequency Input.

8V

ee

Ground.

9FR

status

Free Run Status. (FR = 1)

10

V

cc

Supply Voltage relative to ground.

11

N/C

No Connection. (Optional Reference Output Available)

8.0, 8.1

12

ALARM

Loss of Reference / Lock alarm. (Alarm = 1)

13

FR

Force Free Run. (Phase Lock = 0, Free Run = 1)

9.0

14

TDI

No Connection, Internal Factory Programming Input.

8.0

15

TMS

No Connection, Internal Factory Programming Input.

8.0

16

QN

LVPECL Complementary Output.

17

V

ee

Ground.

18

Q

LVPECL Output.

Circuit Board Footprint & Keepout Recommendations

Figure 3

0.8400

[21.34 mm]

1.0400

[26.42 mm]

0.8650

[21.97 mm]

0.1000

[2.54 mm]

0.0350

[0.89 mm]

0.0650

[1.65 mm]

0.1000

[2.54 mm]

Keep Out

Area

1.0700

[27.18 mm]

NOTES

8.0

Do not connect pin

8.1

Contact a Sales Representative for availibilty

and use of optional reference output

9.0

Input pulled to ground