GEC Plessey Semiconductors SP8792, SP8793 Datasheet

THIS DOCUMENT IS FOR MAINTENANCE

PURPOSES ONLY AND IS NOT

RECOMMENDED FOR NEW DESIGNS

SP8792 225MHz ÷ 80/81
SP8793 225MHz ÷ 40/41

WITH ON-CHIP VOLTAGE REGULATOR

The SP8792 AND SP8793 are low power programmable
÷80/81 and ÷40/41 counter, temperature range: -40°C to
+85°C.They divide by 80(40) when control input is in the high
state and by 81(41) when in the low state. An internal voltage
regulator allows operation from a wide range of supply
voltages.

FEATURES

Very Low Power
Control Input and Output CMOS/TTL Compatible
AC Coupled Input
Operation up to 9.5V using Internal Regulator

QUICK REFERENCE DATA

Supply Voltage 5.2V or 6.8V to 9.5V
Power consumption: 26mW Typical

DS 3294- 1

MODULUS CONTROL INPUT 1 Vcc 18

OUTPUT Vcc 2 2 Vcc 27

OUTPUT 3 INTERNAL DECOUPLING6

0V) 4 INPUT5

DP8
MP8

Figure 1 Pin connections - top view

ABSOLUTE MAXIMUM RATINGS

Supply voltage 6.0V pins 7 & 8 tied
Supply voltage 13.5V pin 8, pin 7 decoupled
Storage temperature range -55°C to +125°C
Max. Junction temperature +175°C
Max. clock input voltage 2.5V p-p
Vcc2 max. 10V

CLOCK

INPUT

1n

1n

DECOUPLING

VCC1

VCC2

2

5

6

VEE (0V)

DIVIDE BY 80/81

DIVIDE BY 40/41

4

(SP8792)

(SP8793)

16k

13

CONTROL

INPUT

OUTPUT

100n

8

VOLTAGE

REGULATOR

7

100n

Figure 2 : Functional diagram SP8799