MM74HCT193 Up/Down Counters Datasheet

MM74HCT193 Datasheet, PDF, Equivalent


Part Number

MM74HCT193

Description

Synchronous Binary Up/Down Counters

Manufacture

National

Total Page 9 Pages
Datasheet
Download MM74HCT193 Datasheet


MM74HCT193
January 1988
MM54HCT193 MM74HCT193
Synchronous Binary Up Down Counters
General Description
These high speed synchronous counters utilize advanced
silicon-gate CMOS technology to achieve the high noise im-
munity and low power consumption of CMOS technology
along with the speeds of low power Schottky TTL The
MM54HCT193 MM74HCT193 is a binary counter having
two separate clock inputs an UP COUNT input and a
DOWN COUNT input All outputs of the flip-flops are simul-
taneously triggered on the low-to-high transition of either
clock while the other input is held high The direction of
counting is determined by which input is clocked
This device has TTL compatible inputs It can drive 15 LS-
TTL loads
This counter may be preset by entering the desired data on
the DATA A DATA B DATA C and DATA D inputs When
the LOAD input is taken low the data is loaded indepen-
dently of either clock input This feature allows the counter
to be used as a divide-by-n counter by modifying the count
length with the preset inputs
In addition the HCT193 can also be cleared This is accom-
plished by inputting a high on the CLEAR input All 4 internal
stages are set to a low level independently of either COUNT
input
Connection Diagram
Dual-In-Line Package
Both a BORROW and CARRY output are provided to en-
able cascading of both up and down counting functions The
BORROW output produces a negative-going pulse when
the counter underflows and the CARRY outputs a pulse
when the counter overflows The counter can be cascaded
by connecting the CARRY and BORROW outputs of one
device to the COUNT UP and COUNT DOWN inputs re-
spectively of the next device
All inputs are protected from damage due to static dis-
charge by diodes to VCC and ground
Features
Y Low quiescent supply current 80 mA maximum (74HCT
Series)
Y Low input current 1 mA maximum
Y TTL compatible inputs
Truth Table
Count
Clear
Up Down
uH
Hu
XX
XX
L
L
H
L
H e high level
L e low level
ue transition from low-to-high
X e don’t care
Load
H
H
X
L
Function
Count Up
Count Down
Clear
Load
TL F 5742 – 1
Order Number MM54HCT193 or MM74HCT193
C1995 National Semiconductor Corporation TL F 5742
RRD-B30M105 Printed in U S A

MM74HCT193
Absolute Maximum Ratings (Notes 1 and 2)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage (VCC)
b0 5V to a7 0V
DC Input Voltage (VIN)
b1 5V to VCC a 1 5V
DC Output Voltage (VOUT)
b0 5V to VCC a 0 5V
Clamp Diode Current (IIK IOK)
g20 mA
DC Output Current per Pin (IOUT)
g25 mA
DC VCC or GND Current per Pin(ICC)
g50 mA
Storage Temperature Range (TSTG)
b65 C to a150 C
Power Dissipation (PD)
(Note 3)
600 mW
S O Package only
500 mW
Lead Temperature (TL)
(Soldering 10 seconds)
260 C
Operating Conditions
Min
Supply Voltage (VCC)
DC Input or Output Voltage
45
(VIN VOUT)
Operating Temp Range (TA)
MM74HCT
0
b40
MM54HCT
b55
Input Rise or Fall Times
(tr tf)
Max
55
VCC
a85
a125
500
Units
V
V
C
C
ns
DC Electrical Characteristics VCC e 5Vg10% unless otherwise specified
Symbol
Parameter
Conditions
TAe25 C
Typ
74HCT
54HCT
TAeb40 C to 85 C TAeb55 C to 125 C Units
Guaranteed Limits
VIH Minimum High Level
Input Voltage
20 20
20 V
VIL Maximum Low Level
Input Voltage
08 08
08 V
VOH Minimum High Level VIN e VIH or VIL
Output Voltage
lIOUTl e 20 mA
VCC VCCb0 1
l lIOUT e 4 0 mA VCC e 4 5V 4 2 3 98
l lIOUT e 4 8 mA VCC e 5 5V 5 2 4 98
VCCb0 1
3 84
4 84
VCCb0 1
37
47
V
V
V
VOL Maximum Low Level VIN e VIH or VIL
Voltage
lIOUTl e 20 mA
0
l lIOUT e 4 0 mA VCC e 4 5V 0 2
l lIOUT e 4 8 mA VCC e 5 5V 0 2
01
0 26
0 26
01
0 33
0 33
01 V
04 V
04 V
IIN Maximum Input
Current
VIN e VCC or GND
VIH or VIL
g0 1
g1 0
g1 0
mA
ICC Maximum Quiescent VIN e VCC or GND
Supply Current
IOUT e 0 mA
8 0 80
160 mA
VIN e 2 4V or 0 5V (Note 4)
10
12
1 3 mA
Note 1 Absolute Maximum Ratings are those values beyond which damage to the device may occur
Note 2 Unless otherwise specified all voltages are referenced to ground
Note 3 Power dissipation temperature derating plastic ‘‘N’’ package b12 mW C from 65 C to 85 C ceramic ‘‘J’’ package b 12 mW C from 100 C to 125 C
Note 4 Measured per pin all other inputs held at VCC or GND
2


Features MM54HCT193 MM74HCT193 Synchronous Binary Up Down Counters January 1988 MM54HC T193 MM74HCT193 Synchronous Binary Up D own Counters General Description These high speed synchronous counters utilize advanced silicon-gate CMOS technology to achieve the high noise immunity and low power consumption of CMOS technolog y along with the speeds of low power Sc hottky TTL The MM54HCT193 MM74HCT193 is a binary counter having two separate c lock inputs an UP COUNT input and a DOW N COUNT input All outputs of the flip-f lops are simultaneously triggered on th e low-to-high transition of either cloc k while the other input is held high Th e direction of counting is determined b y which input is clocked This device ha s TTL compatible inputs It can drive 15 LSTTL loads This counter may be preset by entering the desired data on the DA TA A DATA B DATA C and DATA D inputs Wh en the LOAD input is taken low the data is loaded independently of either cloc k input This feature allows the counter to be used as a divide-.
Keywords MM74HCT193, datasheet, pdf, National, Synchronous, Binary, Up/Down, Counters, M74HCT193, 74HCT193, 4HCT193, MM74HCT19, MM74HCT1, MM74HCT, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




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