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CD54AC193 Datasheet, PDF (1/1 Pages) Intersil Corporation – Presettable Synchronous 4-Bit Binary Up/Down Counter with Reset | |||
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SEMICONDUCTOR
COMPLETE DATA SHEET
June 1997
COMING SOON!
CD54AC193/3A
CD54ACT193/3A
Presettable Synchronous
4-Bit Binary Up/Down Counter with Reset
Description
The CD54AC193/3A and CD54ACT193/3A are up/down
binary counters with separate up/down clocks. These
devices utilize the Harris Advanced CMOS Logic technology.
Presetting the counter to the number on preset data inputs
(P0-P3) is accomplished by a LOW asynchronous parallel
load input (PL). The counter is incremented on the
LOW-to-HIGH transition of the Clock-Up input (and a HIGH
level on the Clock-Down input) and decremented on the
LOW-to-HIGH transition of the Clock-Down input (and a
HIGH level on the Clock-Up input). A HIGH level on the
Reset input overrides any other input to clear the counter to
its zero state. The TCU (carry) output goes LOW half a clock
period before the zero count is reached and returns to a
HIGH level at the zero count. The TCD (borrow) output in the
count down mode likewise goes LOW half a clock period
before the maximum count (15 counts) and returns to HIGH
at the maximum count. Cascading is effected by connecting
the TCU and TCD outputs of a less signiï¬cant counter to the
Clock-Up and Clock-Down inputs, respectively, of the next
most signiï¬cant counter.
The CD54AC193/3A and CD54ACT193/3A are supplied in
16-lead dual-in-line ceramic packages (F sufï¬x).s
Functional Diagram
BINARY PRESET
P0 P1 P2 P3
15 1 10 9
ASYNC
PARALLEL
LOAD
11
PL
ENABLE
MASTER 14
RESET
3 Q0
2 Q1
6 Q2
BINARY
OUTPUTS
CLOCK UP 5
4
CLOCK DOWN
7 Q3
12 TERMINAL
COUNT UP
13 TERMINAL
COUNT DOWN
ACT INPUT LOAD TABLE
INPUT
UNIT LOAD (NOTE 1)
P0 - P3, PL
0.75
MR, CPU, CPD
0.85
NOTE:
1. Unit load is âICC limit speciï¬ed in DC Electrical Speciï¬cations
Table, e.g., 2.4mA Max at +25oC.
Absolute Maximum Ratings
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 = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW
TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at
8mW/oC to 300mW
Operating Temperature Range, TA
Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC
Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . -65oC to +150oC
Lead Temperature (During Soldering)
At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm)
From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265oC
Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm)
With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300oC
CAUTION: Stresses above those listed in âAbsolute Maximum Ratingsâ may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this speciï¬cation is not implied.
Recommended Operating Conditions
Supply Voltage Range, VCC
Unless Otherwise Speciï¬ed, All Voltages Referenced to GND
TA = Full Package Temperature Range
CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO. . . . . . . . . . . . . . . . . . 0V to VCC
Operating Temperature, TA . . . . . . . . . . . . . . . . . . . -55oC to +125oC
Input Rise and Fall Slew Rate, dt/dv
at 1.5V to 3V (AC Types) . . . . . . . . . . . . . . . . . . . 0ns/V to 50ns/V
at 3.6V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 20ns/V
at 4.5V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 10ns/V
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright © Harris Corporation 1994
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File Number 3897
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