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KK4029BN Datasheet

  • KK4029BN

  • Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS

  • 596.48KB

  • 9頁

  • KODENSHI

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TECHNICAL DATA
KK4029B
Presettable Up/Down Counter
High-Voltage Silicon-Gate CMOS
The KK4029B consists of a four-stage binary or BCD-decade up/down
counter with provisions for look-ahead carry in both counting modes. The
inputs consists of a single CLOCK, CARRY IN,(CLOCK ENABLE),
BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual
JAM signals. Q1, Q2, Q3, Q4 and a CARRY OUT signal are provided as
outputs.
A high PRESET ENABLE signal allows information on the JAM
INPUTS to preset the counter to any state asynchronously with the clock.
ORDERING INFORMATION
A low on each JAM line, when the PRESET-ENABLE signal is high,
KK4029BN
Plastic
resets the counter to its zero count. The counter is advanced one count at
KK4029BD SOIC
the positive transition of the clock when the CARRY IN and PRESET
T
A
= -55擄 to 125擄 C for all packages
ENABLE signals are low. Advancement is inhibited when the
CARRY IN or PRESET ENABLE signals are high. The CARRY OUT
signal is normally high and goes low when the counter reaches its
maximum count in the UP mode or the minimum count in the DOWN
mode provided the CARRY IN signal is low. The CARRY IN signal in the low state can thus be considered a CLOCK
ENABLE. The CARRY IN terminal must be connected to GND when
not in use.
PIN ASSIGNMENT
Binary counting is accomplished when the BINARY/DECADE
input is high; the counter counts in the decade mode when the
BINARY/DECADE input is low. The counter counts up when the
UP/DOWN input is high, and down when the UP/DOWN input is low.
Parallel clocking provides synchronous control and hence faster
response from all counting outputs. Ripple-clocking allows for longer
clock input rise and fall times.
鈥?/div>
Operating Voltage Range: 3.0 to 18 V
鈥?/div>
Maximum input current of 1
碌A(chǔ)
at 18 V over full package-
temperature range; 100 nA at 18 V and 25擄C
鈥?/div>
Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
LOGIC DIAGRAM
PIN 16=V
CC
PIN 8= GND
1

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