74HC4059DB,118 NXP Semiconductors, 74HC4059DB,118 Datasheet - Page 13
![IC PROG DIV-BY-N COUNTER 24SSOP](/photos/6/52/65222/568-24-ssop_sot340-1_sml.jpg)
74HC4059DB,118
Manufacturer Part Number
74HC4059DB,118
Description
IC PROG DIV-BY-N COUNTER 24SSOP
Manufacturer
NXP Semiconductors
Series
74HCr
Datasheet
1.74HCT4059D112.pdf
(20 pages)
Specifications of 74HC4059DB,118
Package / Case
24-SSOP
Logic Type
Divide-by-N
Direction
Down
Number Of Elements
1
Number Of Bits Per Element
16
Reset
Asynchronous
Timing
Synchronous
Count Rate
43MHz
Trigger Type
Positive Edge
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74HC4059DB-T
74HC4059DB-T
935190010118
74HC4059DB-T
935190010118
Philips Semiconductors
The arrangement shown in Fig.12 is easy to follow; once
during every cycle the programmed digits are jammed in
(15 616 in this example) and then a round number of
11 000 is jammed in, nine times in succession, by forcing
the JAM inputs via AND/OR gates.
Numbers larger than the extended counter range can also
be produced by cascading the PC74HC/HCT4059 with
some other counting devices. Figure 13 shows such an
arrangement where only one fixed divide-by number is
desired. The dual flip-flop wired to produce a divide-by-3
count can be replaced by other counters such as the “190”,
“191”, “192”, “193”, “4017”, “4510” and “4516”.
1998 Jul 08
Programmable divide-by-n counter
13
In Fig.13 the divide-by-n sub-system is preset once to a
number which represents the least significant digits of the
divide-by number (15 690 in the example shown in Fig.13).
The sub-system is then preset twice to a round number
(8 000 in the example shown in Fig.13) and multiplied by
the number of the divide-by mode (2 in the example shown
in Fig.13).
To verify:
15 690 2 8 000 2 = 47 690.
It is important that the second counting device has an
output that is HIGH or LOW during only one of its counting
states.
74HC/HCT4059
Product specification