SP8794
60MHz48 (2-MODULUS EXTENDER)
ADVANCE INFORMATION
DS3676-1·2
The SP8794 is a divide-by-eight counter designed fo...
SP8794
60MHz48 (2-MODULUS EXTENDER)
ADVANCE INFORMATION
DS3676-1·2
The SP8794 is a divide-by-eight counter designed for use with 2-modulus dividers. It increases the minimum division ratio of the 2-modulus divider while retaining the same difference in division ratio. The device is suitable for use in low power frequency synthesis interfacing to
CMOS or TTL.
FEATURES
s Very Low Power s Control Input and Counter Output will Interface Directly
to TTL or
CMOS
s Interfaces to GPS SP8000 Series Programmable
2-Modulus Dividers
QUICK REFERENCE DATA
s Supply
Voltage: 5·0V s Power Consumption: 40mW s Temperature Range: 255°C to 1125°C (A Grade)
230°C to 170°C (B Grade)
ABSOLUTE MAXIMUM RATINGS
Supply
voltage Open collector output
voltage Storage temperature range Max. junction temperature Max. clock input
voltage Output sink current
8V 12V
265°C to 1150°C 1175°C 2·5V p-p
10mA
CLOCK INPUT
CLOCK INPUT
VCC
CONTROL INPUT VEE
78 1 62
54 3
CONTROL OUTPUT COUNTER OUTPUT
NC CM8
Fig. 1 Pin connections - bottom view
ORDERING INFORMATION
SP8794 A CM SP8794 B CM SP8794 AC CM
CONTROL 2 OUTPUT
CONTROL INPUT 6
DQ DQ CK CK
VCC 1
DQ
DQ CK CK
DQ
DQ CK CK
OUTPUT STAGE
3 OPEN COLLECTOR COUNTER OUTPUT
87 CLOCK INPUT CLOCK INPUT
5 VEE (0V)
NOTE: NEGATIVE GOING OUTPUT SHOULD CLOCK FOLLOWING STAGE
Fig. 2 Functional diagram
SP8794
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, the Electrical Characteristics are guaranteed over specified supply, frequency and temperature range S...