IN74ACT192N Просмотр технического описания (PDF) - Integral Corp.

Номер в каталоге

Компоненты Описание

производитель

IN74ACT192N

PRESETTABLE BCD/DECADE UP/DOWN COUNTER

Integral Corp. 

IN74ACT192

PRESETTABLE BCD/DECADE UP/DOWN COUNTER

High-Speed Silicon-Gate CMOS

The IN74ACT192 is identical in pinout to the LS/ALS192,

HC/HCT192. The IN74ACT192 may be used as a level converter

for interfacing TTL or NMOS outputs to High Speed CMOS

inputs.

The counter has two separate clock inputs, a Count Up Clock

and Count Down Clock inputs. The direction of counting is

determined by which input is clocked. The outputs change state

synchronous with the LOW-to-HIGH transitions on the clock

inputs. This counter may be preset by entering the desired data

on the P0, P1, P2, P3 input. When the Parallel Load input is

taken low the data is loaded independently of either clock input.

This feature allows the counters to be used as devide-by-n by

modifying the count lenght with the preset inputs. In addition the

counter can also be cleared. This is accomplished by inputting a

high on the Master Reset input. All 4 internal stages are set to

low independently of either clock input.Both a Terminal Count

Down (TCD) and Terminal Count Up (TCU) Outputs are provided

to enable cascading of both up and down counting functions.

The TCD output produces a negative going pulse when the

counter underflows and TCU outputs a pulse when the

counter overflows. The counter can be cascaded by

connecting the TCU and TCD outputs of one device to the

Count Up Clock and Count Down Clock inputs, respectively,

of the next device.

• TTL/NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA; 0.1 µA @ 25°C

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74ACT192N Plastic

IN74ACT192D SOIC

TA = -40° to 85° C for all

packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 16 =VCC

PIN 8 = GND

1

Share Link: