HEF4534B Datasheet, PDF (10/10 Pages) NXP Semiconductors – Real time 5-decade counter

Philips Semiconductors
Real time 5-decade counter
APPLICATION INFORMATION
Product specification
HEF4534B
LSI
Fig.9 Two HEF4534B ICs connected for cascade operation. TC is HIGH for a single clock period when all five
BCD decades go to zero. TC also goes HIGH when MR is applied.
Fig.10 Forcing a decade to the O_n outputs. When the O_n outputs of a given decade are required, this
configuration will lock-up the selected decade within four clock cycles. The select line feed back may be
hardwired or switched.
January 1995
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