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MC54HCT374A Datasheet, PDF (1/7 Pages) Motorola, Inc – OCTAL 3-STATE NONINVERTING D FLIP-FLOP WITH LSTTL-COM | |||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Octal 3-State Noninverting
D Flip-Flop with
LSTTL-Compatible Inputs
HighâPerformance SiliconâGate CMOS
The MC54/74HCT374A may be used as a level converter for
interfacing TTL or NMOS outputs to HighâSpeed CMOS inputs.
The HCT374A is identical in pinout to the LS374.
Data meeting the setup and hold time is clocked to the outputs with the
rising edge of Clock. The Output Enable does not affect the state of the
flipâflops, but when Output Enable is high, the outputs are forced to the
highâimpedance state. Thus, data may be stored even when the outputs
are not enabled.
The HCT374A is identical in function to the HCT574A, which has the
input pins on the opposite side of the package from the output pins. This
device is similar in function to the HCT534A, which has inverting outputs.
⢠Output Drive Capability: 15 LSTTL Loads
⢠TTL/NMOSâCompatible 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
⢠In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
⢠Chip Complexity: 276 FETs or 69 Equivalent Gates
⢠Improvements over HCT374
â Improved Propagation Delays
â 50% Lower Quiescent Power
â Improved Input Noise and Latchup Immunity
LOGIC DIAGRAM
DATA
INPUTS
D0 3
D1 4
D2 7
D3 8
D4 13
D5 14
D6 17
D7 18
CLOCK 11
2 Q0
5 Q1
6 Q2
9 Q3
12 Q4
15 Q5
16 Q6
19 Q7
NONINVERTING
OUTPUTS
PIN 20 = VCC
OUTPUT ENABLE 1
PIN 10 = GND
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Design Criteria
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Internal Gate Count*
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Internal Gate Propagation Delay
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Internal Gate Power Dissipation
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Speed Power Product
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ * Equivalent to a twoâinput NAND gate.
Value
69
1.5
5.0
.0075
Units
ea.
ns
µW
pJ
2/97
© Motorola, Inc. 1997
1
MC54/74HCT374A
20
1
J SUFFIX
CERAMIC PACKAGE
CASE 732â03
20
1
20
1
N SUFFIX
PLASTIC PACKAGE
CASE 738â03
DW SUFFIX
SOIC PACKAGE
CASE 751Dâ04
20
1
SD SUFFIX
SSOP PACKAGE
CASE 940Câ03
20
1
DT SUFFIX
TSSOP PACKAGE
CASE 948Eâ02
ORDERING INFORMATION
MC54HCTXXXAJ
Ceramic
MC74HCTXXXAN
Plastic
MC74HCTXXXADW SOIC
MC74HCTXXXASD SSOP
MC74HCTXXXADT TSSOP
PIN ASSIGNMENT
OUTPUT
ENABLE
1
20 VCC
Q0 2
19 Q7
D0 3
18 D7
D1 4
17 D6
Q1 5
16 Q6
Q2 6
15 Q5
D2 7
14 D5
D3 8
13 D4
Q3 9
12 Q4
GND 10
11 CLOCK
FUNCTION TABLE
Inputs
Output
Output
Enable Clock D
Q
L
L
L
L,H,
H
X
H
H
L
L
X No Change
X
Z
X = donât care
Z = high impedance
REV 7
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