IW4029BD datasheet, PDF - EEWORLD Datasheet

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IW4029BD: Descriptionpresettable Up/down counter high-voltage silicon-gate cmos; File Size299KB，9 Pages; ManufacturerIK Semicon; Websitehttp://www.iksemi.com/en/index.html

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IW4029BD Overview

presettable Up/down counter high-voltage silicon-gate cmos

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TECHNICAL DATA

IW4029B

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 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,

IW4029BN Plastic

resets the counter to its zero count. The counter is advanced one count at

IW4029BD SOIC

the positive transition of the clock when the CARRY IN and PRESET

= -55° to 125° 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.

•

Operating Voltage Range: 3.0 to 18 V

•

Maximum input current of 1

μA

at 18 V over full package-

temperature range; 100 nA at 18 V and 25°C

•

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

PIN 8= GND

Rev. 00

IW4029BD Related Products

	IW4029BD	IW4029BN	IW4029B
Description	presettable Up/down counter high-voltage silicon-gate cmos	presettable Up/down counter high-voltage silicon-gate cmos	presettable Up/down counter high-voltage silicon-gate cmos

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