IW4029 INTEGRAL [Integral Corp.], IW4029 Datasheet

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IW4029

Manufacturer Part Number
IW4029
Description
Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS
Manufacturer
INTEGRAL [Integral Corp.]
Datasheet
TECHNICAL DATA
Presettable Up/Down Counter
High-Voltage Silicon-Gate CMOS
up/down counter with provisions for look-ahead carry in both counting
modes.
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.
INPUTS to preset the counter to any state asynchronously with the
clock. A low on each JAM line, when the PRESET-ENABLE signal is
high, resets the counter to its zero count. The counter is advanced one
count at the positive transition of the clock when the CARRY IN and
PRESET 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.
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.
response from all counting outputs. Ripple-clocking allows for
longer clock input rise and fall times.
64
The IW4029B consists of a four-stage binary or BCD-decade
A high PRESET ENABLE signal allows information on the JAM
Binary counting is accomplished when the BINARY/DECADE
Parallel clocking provides synchronous control and hence faster
Operating Voltage Range: 3.0 to 18 V
Maximum input current of 1 A at 18 V over full package-
temperature range; 100 nA at 18 V and 25 C
Noise margin (over full package temperature range):
The
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
inputs
consists
of
LOGIC DIAGRAM
a
single
CLOCK,
PIN 16=V
PIN 8= GND
T
A
ORDERING INFORMATION
= -55 to 125 C for all packages
PIN ASSIGNMENT
CC
IW4029BN Plastic
IW4029BD SOIC
IW4029B

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IW4029 Summary of contents

Page 1

... TECHNICAL DATA Presettable Up/Down Counter High-Voltage Silicon-Gate CMOS The IW4029B 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 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 ...

Page 2

... For proper operation, V GND ( OUT CC Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V Unused outputs must be left open. Parameter SOIC Package+ Parameter and V IN IW4029B Value Unit -0.5 to + ...

Page 3

... IW4029B DC ELECTRICAL CHARACTERISTICS Symbol Parameter V Minimum High-Level IH Input Voltage V Maximum Low -Level IL Input Voltage V Minimum High-Level OH Output Voltage V Maximum Low-Level OL Output Voltage I Maximum Input IN Leakage Current I Maximum Quiescent CC Supply Current (per Package) I Minimum Output Low OL (Sink) Current I Minimum Output OH High (Source) Current ...

Page 4

... FUNCTION TABLE LOGIC LEVEL H BINARY COUNT L DECADE COUNT COUNTER ADVANCE AT POS. CLOCK TRANSITION L ADVANCE COUNTER AT POS. CLOCK TRANSITION IW4029B =t =20 ns Guaranteed Limit Unit 25 C 125 MHz 4 2 5.5 2.75 500 1000 ns 240 480 180 360 ...

Page 5

... IW4029B TIMING REQUIREMENTS Symbol Parameter t Minimum Pulse Width, Clock (Figure Minimum Pulse Width, Preset Enable w (Figure Minimum Setup Time, Clock to B/D or U/D su (Figure Minimum Removal Time, Preset Enable (Figure rem Minimum Hold Time, Clock to Carry In (Figure Minimum Setup Time, Carry In to Clock ...

Page 6

... Figure 1. Switching Waveforms Figure 2. Switching Waveforms IW4029B 69 ...

Page 7

... IW4029B TIMING DIAGRAM; binary mode; J1=HIGH; J2=LOW; BIN/DEC=HIGH TIMING DIAGRAM; decade mode; J1=LOW; J4=LOW; BIN/DEC=LOW 70 ...

Page 8

... IW4029B EXPANDED LOGIC DIAGRAM TRUTH TABLE CLOCK ...

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