Product specification1991 Feb 08
IC05 Data Handbook
Page 2
Philips SemiconductorsProduct specification
74ALS174Hex D flip-flop
FEA TURES
•Four edge-triggered D flip-flops
•Buffered common clock
•Buffered asynchronous master reset
DESCRIPTION
The 74ALS174 has six edge-triggered D-type flip-flops with
individual D inputs and Q outputs. The common buffered clock (CP)
and master reset (MR
simultaneously .
The register is fully edge-triggered. The state of each D input, one
setup time before the Low-to-High clock transition is transferred to
the corresponding flip-flop’s Q output.
All Q outputs will be forced Low independent of clock or data inputs
by a Low voltage level on the MR
applications where true outputs only are required, and the clock and
master reset are common to all storage elements.
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
9
1
V
= Pin 16
CC
GND = Pin 8
346
D0 D1 D2 D3 D4 D5
CP
MR
Q2 Q3 Q4 Q5
Q1
7101215
5Q02
11 13 14
SF00189
IEC/IEEE SYMBOL
74ALS (U.L.)
HIGH/LOW
9
1
3
4
6
11
13
14
R
1D
C1
LOAD VALUE
HIGH/LOW
2
5
7
10
12
15
SF00190
1991 Feb 08853–1023 01670
2
Page 3
Philips SemiconductorsProduct specification
SYMBOL
PARAMETER
UNIT
74ALS174Hex D flip-flop
LOGIC DIAGRAM
V
= Pin 16
CC
GND = Pin 8
CP
MR
D0
3
D
CP
R
D
9
1
D1
4
Q0
D
CP
R
D
2
Q
D2
6
Q1
D
CP
R
D
5
Q
D3
Q
7
Q2
FUNCTION TABLE
INPUTSOUTPUTS
MRCPDQ
LXXLReset (clear)
H↑hHLoad “1”
H↑ILLoad “0”
NOTES:
H = High-voltage level
h = High state must be present one setup time before the Low-to-High clock transition
L = Low-voltage level
l = Low state must be present one setup time before the Low-to-High clock transition
X = Don’t care
↑ = Low-to-High clock transition
n
11
D
CP
R
D
D4
13
Q3
D
CP
R
D
10
Q
D5
14
Q4
D
Q
CP
R
D
12
15
Q5
SF00192
Q
OPERATING
MODE
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
OUT
T
amb
T
stg
Supply voltage–0.5 to +7.0V
Input voltage –0.5 to +7.0V
Input current–30 to +5mA
Voltage applied to output in High output state–0.5 to V
Current applied to output in Low output state16mA
Operating free-air temperature range0 to +70°C
Storage temperature range–65 to +150°C
SO16: plastic small outline package; 16 leads; body width 3.9 mmSOT109-1
1991 Feb 08
7
Page 8
Philips SemiconductorsProduct specification
74ALS174Hex D flip–flop
DEFINITIONS
Data Sheet IdentificationProduct StatusDefinition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
1991 Feb 08
8
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