HD74HC Series Common Information
September 2000
Customer Service Division
Semiconductor & Integrated Circuits
Hitachi, Ltd.
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Outline of Hitachi High-Speed CMOS Logic
Outline of Hitachi High-Speed CMOS Logic
Features of High-Speed CMOS Logic
Hitachi’s HS-CMOS logics–the HD74HC series–and the HCT series based on the EIA/JEDEC
specification. Their specification are shown in the Maximum Ratings and the Electrical Characteristics
Tables. The HS-CMOS has the characteristics of both standard CMOS logic series and LS-TTL series.
The features of this logic are:
•
High-Speed equivalent to the LS-TTL’s
•
Capable of driving 10LS-TTL loads
(Capable of driving 15LS-TTL loads in bus drivers)
•
Maximum input current of
±
1
µA
at 6 V power supply
•
Wide supply voltage range: HC series
2 to 6 V
HCT series
4.5 to 5.5 V
•
Wide noise margin
•
V
CC
assurance of Electrical Characteristics at 2.0, 4.5 and 6.0 V
•
Low Static Power Consumption 1/2 of EIA/JEDEC
Type Name of High-Speed CMOS Logic
The JEDEC has divided the HS-CMOS’s into two types: HC and HCT. The HC type has the CMOS logic
level for inputs and outputs with buffers. The HCT type has the TTL logic level for inputs and the outputs
have buffers.
The industry-standarized maximum ratings and recommended operating range are shown below. Limits for
the static characteristics are shown below (right): Table 1 is in the industry-standard and Table 2 is the
Hitachi specifications.
The Hitachi specifications is used throughout this data book. Additional specification are shown in the
individual data sheets. Switching characteristics are specified under the following conditions:
•
Input pulse voltage: + V
CC
•
Load capacitance: 50 pF
•
Input pulse rise/fall time: 6 ns
Switching times measured from 50% point of input voltage to 50% point of output voltage
•
Three different supply voltages: 2.0, 4.5 and 6.0 V
1
Outline of Hitachi High-Speed CMOS Logic
Input Levels of Each Series Type
(V
CC
= 5 V)
Input level
Type
HC series
HCT series
V
IH
3.5 V
2.0 V
V
IL
1.5 V
0.8 V
Remarks
—
TTL logic level for inputs
Type Name of HS-CMOS Logic
HD74
Package Code
(P : Plastic DIP,FP:Small outline package (EIAJ TYPE),
RP : Small outline package (JEDEC TYPE))
Individual device code
2 or 3-digit:same pin connection and function
with its corresponding device
in LS-TTL
4–digit:same pin connection and function
with the 14000B series CMOS)
Type code (HC,HCT)
Absolute Maximum Ratings
(Voltages Referenced to GND)
Item
Supply voltage
I/O voltage
I/O diode current
Output current
V
CC
, GND current
Power dissipation
Storage temperature Range
Symbol
V
CC
V
IN
, V
OUT
I
IK
, I
OK
I
O
I
CC
, I
GND
P
T
Tstg
Rating
–0.5 to +7
–0.5 to V
CC
+0.5
±20
±25
±50
500
–65 to +150
Unit
V
V
mA
mA
mA
mW
˚C
Additional specification values are shown on the individual data sheets.
2
Outline of Hitachi High-Speed CMOS Logic
Recommended Operating Range
HD74HC
Item
Supply voltage
I/O voltage
Operating temperature
Input rise/fall time
Symbol
V
CC
V
IN
, V
OUT
Ta
tr, tf
Rating
2 to 6
0 to V
CC
–40 to +85
0 to 1000
0 to 500
0 to 400
Unit
V
V
˚C
ns
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Condition
HD74HCT
Item
Supply voltage
I/O voltage
Operating temperature
Input rise/fall time
Symbol
V
CC
V
IN
, V
OUT
Ta
tr, tf
Rating
4.5 to 5.5
0 to V
CC
–40 to +85
0 to 1000
0 to 500
0 to 400
Unit
V
V
˚C
ns
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Condition
HD74HC14, HC132
Item
Input rise/fall time
Symbol
tr, tf
Rating
0 to unlimited
0 to unlimited
0 to unlimited
Unit
ns
Condition
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
HD74HC123A, HC221, HC423A
Item
A, B Input rise/fall time
Symbol
tr, tf
Rating
0 to unlimited
0 to unlimited
0 to unlimited
CLR Input rise/fall time
tr, tf
0 to 1000
0 to 500
0 to 400
ns
Unit
ns
Condition
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
3
Outline of Hitachi High-Speed CMOS Logic
HD74HC4538
Item
A, B Input rise/fall time
Symbol
tr, tf
Rating
0 to unlimited
0 to unlimited
0 to unlimited
CD Input rise/fall time
tr, tf
0 to 1000
0 to 500
0 to 400
ns
Unit
ns
Condition
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
HD74HC540, HC541
Item
A Input rise/fall time
Symbol
tr, tf
Rating
0 to unlimited
0 to unlimited
0 to unlimited
G
Input rise/fall time
tr, tf
0 to 1000
0 to 500
0 to 400
ns
Unit
ns
Condition
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
4
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