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DS8627N Datasheet

  • DS8627N

  • 130/225 MHz Low Power Prescalers

  • 95.60KB

  • 4頁

  • NSC

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DS8627 DS8628 130 225 MHz Low Power Prescalers
June 1986
DS8627 DS8628 130 225 MHz Low Power Prescalers
General Description
The DS8627 and DS8628 are low power fixed ratio prescal-
ers which divide by 24 and 20 respectively The inputs can
be driven either single or double-ended and they are buff-
ered providing 40 100 mVrms input sensitivity The output
provided is open-collector and is capable of interfacing with
TTL and CMOS
The device can be used in phase-locked loop applications
such as FM radio or other communications bands to pre-
scale the input frequency down to a more usable level A
digital frequency display system can also be derived
separately or in conjunction with a phase-locked loop and it
can extend the useful range of many inexpensive frequency
counters to 225 MHz
Features
Y
Y
Y
Input frequency 130 MHz (-4 -3) 225 mHz (-2 std)
Low power 10 mA (-4 -2) 7 mA (-3 std)
Input sensitivity 100 mVrms (-4 -3) 40 mVrms (-2 std)
Logic and Connection Diagrams
DS8627 (
d
24)
TL F 5009 鈥?1
DS8628 (
d
20)
TL F 5009 鈥?2
Dual-In-Line Package
TL F 5009 鈥?3
Top View
Order Number DS8627N or DS8628N (-4 -3 -2)
See NS Package Number N08E
C
1995 National Semiconductor Corporation
TL F 5009
RRD-B30M115 Printed in U S A

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