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CD54ACT191

SpecificationsDC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . -0.5V to +6VDC Input Diode Current, IIKFor VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20mADC Output Diode Current, IOKFor VO < -0.5...

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SeekIC No. : 004311566 Detail

CD54ACT191: SpecificationsDC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . -0.5V to +6VDC Input Diode Current, IIKFor VI < -0.5V or VI > VCC + 0.5V . . . . . . ...

CD54ACT191 Data Sheet

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Part Number:
CD54ACT191
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Specifications

DC Supply Voltage, VCC. . . . . . . . . . . . . . . .  . . . . . .  . . . . . .. . . . . . . . -0.5V to +6V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . .  . . . . . .  . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V. . . . . . . . . .  . . . . . .  . . . . .. . . . . . . . . . .±50mA
DC Output Source or Sink Current, Per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V. . . . . . . . . . . . .  . . . . . .  . . . . ..  . . . . . . .±50mA
DC VCC or GND Current, ICC or IGND
For Up to 4 Outputs Per Device, Add ±25mA For Each
Additional Output . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . .  . . . . . . . . . . . . . .±100mA
Power Dissipation Per Package, PD
TA = -55 to +100 (Package F) . . . . . . . . .  . . . . . .  . . . . . .  . . . . . . . . . . . 500mW
TA = +100 to +125 (Package F) . . . . . . . . . Derate Linearly at 8mW/ to 300mW
Operating Temperature Range, TA
Package Type F . . . . . . . . . . . . . . . . . . . .  . . . . . .  . . . . . .  . . . . . . . -55oC to +125
Storage Temperature, TSTG . . . . . . . . . . ... . . . . . .  . . . . . .  . . . .  . . -65oC to +150
Lead Temperature (During Soldering)
At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm)
From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . .  . . . . . . .. . +265
Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm)
With Solder Contacting Lead Tips Only. . . . . . . .  . . . . . .  . . . . . .  . . . . . . . . . . +300


Description

The CD54AC191/3A and CD54ACT191/3A are asynchronously presettable binary up/down synchronous counters that utilize the Harris Advanced CMOS Logic technology. Presetting the counter to the number on preset data inputs (P0-P3) is accomplished by setting LOW the asynchronous parallel load input (PL). Counting occurs when PL is HIGH. Count Enable (CE) is LOW, and the Up/Down (U/D) input is either LOW for up-counting or HIGH for down-counting. The CD54ACT191counter is incremented or decremented synchronously with the LOW-to-HIGH transition of the clock.

When an overflow or underflow of the counter occurs, the Terminal Count (TC) output, which is LOW during counting, goes HIGH and remains HIGH for one clock cycle. This CD54ACT191 output can be used for look-ahead carry in high-speed cascading. The TC output also initiates the Ripple Clock (RC) output which, normally HIGH, goes LOW and remains LOW for the low-level portion of the clock pulse. These counters can be cascaded using the Ripple Count output.

The CD54AC191/3A and CD54ACT191/3A are supplied in 16-lead dual-in-line ceramic packages (F suffix).




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