•High impedance inputs for reduced loading (20µA in Low and
High states)
•Ideal for addressable register applications
•Enable for address and data synchronization applications
•Eight edge–triggered D–type flip–flops
•Buffered common clock
•See ’F273A for Master Reset version
DESCRIPTION
The 74F377A has 8 edge-triggered D-type flip-flops with individual D
inputs and Q outputs. The common buffered clock (CP) input loads
all flip-flops simultaneously when the Enable (E
The register is fully edge triggered. The state of each D input, one
set-up time before the Low-to-High clock transition, is transferred to
the corresponding flip-flop’s Q output.
The E
input must be stable one setup time prior to the Low-to-High
H = High voltage level
h = High voltage level one set-up time prior to the Low-to-High
clock transition
L = Low voltage level
l= Low voltage level one set-up time prior to the Low-to-High
clock transition
X = Don’t care
↑ = Low-to-High clock transition
D4D5D6D7
13141718
11
CP
VCC = Pin 20
GND = Pin 10
DQ
CP
D
CP
256912151619
Q0Q1Q2Q3
D
QQ
CP
DQ
CP
DQ
CP
D
CP
Q4Q5Q6Q7
D
QQ
CP
DQ
CP
SF00353
1996 Mar 12
3
Page 4
Philips Semiconductors Product specification
ICCSupply current (total)
I
V
MAX
2740mA
74F377AOctal D-type flip-flop with enable
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
V
I
T
V
I
OUT
OUT
amb
T
Supply voltage–0.5 to +7.0V
CC
Input voltage –0.5 to +7.0V
IN
Input current–30 to +5mA
IN
Voltage applied to output in High output state–0.5 to V
Current applied to output in Low output state40mA
Operating free air temperature range0 to +70°C
Storage temperature range–65 to +150°C
stg
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
IH
V
IL
I
Ik
I
OH
I
OL
T
amb
Supply voltage
High–level input voltage2.0V
Low–level input voltage0.8V
Input clamp current–18mA
High–level output current–1mA
Low–level output current20mA
Operating free air temperature range0 +70
PARAMETER
PARAMETERRATINGUNIT
CC
V
LIMITSUNIT
MINNOMMAX
4.55.05.5V
°C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
Low-level output voltageVCC = MIN, VIL = MAX,±10%V
OL
VIH = MIN, IOL = MAX±5%V
V
I
IH
I
I
OS
Input clamp voltageVCC = MIN, II = I
IK
I
Input current at maximum input voltageVCC = 0.0V, VI = 7.0V100µA
I
High–level input current
Low–level input current
IL
Short circuit output current
pp
4
CCH
I
CCL
VCC = MAX, VI = 2.7V
VCC = MAX, VI = 0.5V
VCC = MAX
=
CC
VCC = MAX2943mA
IK
Notes to DC electrical characteristics
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
3. To reduce the effect of external noise during test. Special test conditions are not necessary for the ’377A.
= 5V, T
CC
4. Not more than one output should be shorted at a time. For testing I
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
amb
= 25°C.
, the use of high-speed test apparatus and/or sample-and-hold
OS
of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
tests should be performed last.
OS
1
MINTYP2MAX
2.5V
CC
2.73.4V
CC
2.5V
CC
2.7V
CC
CC
CC
0.350.50V
0.350.50V
–0.73-1.2V
20µA
–20µA
–60–150mA
1996 Mar 12
4
Page 5
Philips Semiconductors Product specification
74F377AOctal D-type flip-flop with enable
AC CHARACTERISTICS
LIMITS
T
SYMBOLPARAMETERWAVEFORM
f
MAX
t
PLH
t
PHL
Maximum clock frequency1150165120MHz
Propagation delay
CP to Qn
1
AC SETUP REQUIREMENTS
SYMBOLPARAMETERWAVEFORM
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
tw(H)
t
(L)
w
Setup time, High or Low
Dn to CP
Hold time, High or Low
Dn to CP
Setup time, High or Low
E to CP
Hold time, High or Low
E to CP
Clock Pulse width
High or Low
2
2
2
2
1
= +25oC
amb
VCC = +5.0V
C
= 50pF
L
RL = 500Ω
MINTYPMAXMINMAX
3.0
4.5
5.0
6.5
8.0
9.0
LIMITS
T
= +25oC
amb
VCC = +5.0V
CL = 50pF
RL = 500Ω
MINTYPMAXMINMAX
2.5
2.5
1.0
0.0
3.0
4.0
0.0
0.0
4.0
4.0
T
=0oC to +70oC
amb
VCC = +5.0V ±10%
C
= 50pF
L
RL = 500Ω
2.5
4.0
T
= 0oC to +70oC
amb
VCC = +5.0V ±10%
CL = 50pF
RL = 500Ω
2.5
2.5
1.0
0.0
3.0
4.5
0.0
0.0
5.0
4.0
9.0
10.5
UNIT
ns
UNIT
ns
ns
ns
ns
ns
AC WAVEFORMS
1/f
max
CP
Qn
V
M
tw(H)
PHL
V
M
tw(L)t
V
M
Waveform 1. Propagation Delay, Clock Input to Output, Clock
Pulse Width and Maximum Clock Frequency
NOTE: For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output
performance.
V
M
t
PLH
V
M
SF00294
D
CP
M
t
ts(L)
V
M
t
h
s
V
V
M
M
th = 0
V
M
SF01237
V
th = 0
ts(H)
M
n
E
V
V
MVM
Waveform 2. Data and Enable
Setup and Hold Times
1996 Mar 12
5
Page 6
Philips Semiconductors Product specification
74F377AOctal D-type flip-flop with enable
TEST CIRCUIT AND WAVEFORM
V
CC
PULSE
GENERATOR
V
IN
R
T
D.U.T.
V
OUT
Test Circuit for Open Collector Outputs
SWITCH POSITION
TESTSWITCH
t
t
PLZ
PZL
closed
closed
All otheropen
7.0V
R
L
R
C
L
L
NEGATIVE
PULSE
POSITIVE
PULSE
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
Input Pulse Definition
t
w
V
M
10%
)
)
t
w
t
TLH (tr
t
THL (tf
)
)
90%
V
M
90%
10%
AMP (V)
0V
AMP (V)
0V
DEFINITIONS:
R
= Load resistor;
L
see AC electrical characteristics for value.
= Load capacitance includes jig and probe capacitance;
SO20:plastic small outline package; 20 leads; body width 7.5 mmSOT163-1
74F377A
1996 Mar 12
8
Page 9
Philips SemiconductorsProduct specification
Octal D-type flip-flop with enable
74F377A
NOTES
1996 Mar 12
9
Page 10
Philips SemiconductorsProduct specification
Octal D-type flip-flop with enable
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
This data sheet contains the design target or goal specifications for product development.
Specification 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 chages 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.
[1]
74F377A
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves 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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print codeDate of release: 10-98
Document order number:9397-750-05121
yyyy mmm dd
10
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