PHILIPS N74F298D

INTEGRATED CIRCUITS
74F298
Quad 2-input multiplexer with storage
Product specification
IC15 Data Handbook
1989 Aug 14
Philips Semiconductors
Product specification
Quad 2-input multiplexer with storage
FEATURES
74F298
PIN CONFIGURATION
• Fully synchronous operation
• Select from two data sources
• Buffered, negative edge triggered clock
• Provides the equivalent of function capabilities of two separate
I1b
1
16
VCC
I1a
2
15
Qa
I0a
3
14
Qb
I0b
4
13
Qc
I1c
5
12
Qd
I1d
6
11
CP
I0d
7
10
S
GND
8
9
I0c
MSI functions (74F157 and 74F175)
DESCRIPTION
The 74F298 is a high speed Quad 2-Input Multiplexer with storage.
It selects 4 bits of data from two sources (ports) under the control of
a common Select input (S). The selected data is transferred to the
4-bit output register synchronous with the High-to-Low transition of
the clock (CP). The 4-bit register is fully edge triggered. The data
inputs (I0 and I1) and Select input (S) must be stable only one setup
time prior to the High-to-Low transition of the clock for predictable
operation.
SF00859
TYPE
TYPICAL fMAX
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F298
115MHz
30mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
16-pin plastic DIP
N74F298N
SOT38-4
16-pin plastic SO
N74F298D
SOT109-1
PKG DWG #
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
I0a, I0b, I0c, I0d
PINS
DESCRIPTION
Data inputs
1.0/1.0
20µA/0.6mA
I1a, I1b, I1c, I1d
Data inputs
1.0/1.0
20µA/0.6mA
S
Select input
1.0/1.0
20µA/0.6mA
Clock input (active falling edge)
1.0/1.0
20µA/0.6mA
Data outputs
50/33
1.0mA/20mA
CP
Qa, Qb, Qc, Qd
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
11
3
2
4
1
9
5
I1b
I0c
I1c
7
6
10
3
I0a I1a I0b
I0d I1d
2
10
S
4
11
CP
1
Qa
Qb
Qc
C1
M2
2, 1D
15
2, 1D
14
9
Qd
13
5
7
VCC = Pin 16
GND = Pin 8
1989 Aug 14
15
14
13
12
6
12
SF00861
SF00860
2
853–0061 97377
Philips Semiconductors
Product specification
Quad 2-input multiplexer with storage
74F298
LOGIC DIAGRAM
S
10
CP
11
I1a
I0a
2
3
I1b
I0b
I1c
I0c
4
5
9
1
I1d
R
R
R
CP
CP
CP
S
Qa
S
15
Qa
VCC = Pin 16
GND = Pin 8
Qb
S
14
Qb
I0d
6
7
R
CP
Qc
S
Qd
13
Qc
12
Qd
SF00862
FUNCTION TABLE
INPUTS
CP
S
↓
↓
OUTPUT
I0n
I1n
l
l
X
L
l
h
X
H
↓
h
X
l
L
↓
h
X
h
H
H
h
=
=
L
l
=
=
X
↓
=
=
Qn
OPERATING MODE
Load source “0”
Load source “1”
High voltage level
High voltage level one setup time prior to the High-to-Low
clock transition
Low voltage level
Low voltage level one setup time prior to the High-to-Low
clock transition
Don’t care
High-to-Low clock transition
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits 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
PARAMETER
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
VOUT
Voltage applied to output in High output state
–0.5 to VCC
V
IOUT
Current applied to output in Low output state
40
mA
Tamb
Operating free-air temperature range
0 to +70
°C
Tstg
Storage temperature range
–65 to +150
°C
1989 Aug 14
3
Philips Semiconductors
Product specification
Quad 2-input multiplexer with storage
74F298
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
UNIT
MIN
NOM
MAX
5.0
5.5
VCC
Supply voltage
4.5
V
VIH
High-level input voltage
2.0
VIL
Low-level input voltage
0.8
V
IIK
Input clamp current
–18
mA
IOH
High-level output current
–1
mA
IOL
Low-level output current
20
mA
Tamb
Operating free-air temperature range
70
°C
V
0
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
SYMBOL
TEST CONDITIONSNO TAG
PARAMETER
MIN
VCC = MIN,, VIL = MAX,,
VIH = MIN, IOH = –MAX
VOH
O
High level output voltage
High-level
VOL
O
Low level output voltage
Low-level
VIK
Input clamp voltage
VCC = MIN, II = IIK
II
Input current at maximum input voltage
IIH
IIL
IOS
ICC
±10%VCC
2.5
±5%VCC
2.7
TYP
NO TAG
UNIT
MAX
V
3.4
V
±10%VCC
0.30
0.50
V
±5%VCC
0.30
0.50
V
–0.73
–1.2
V
VCC = MAX, VI = 7.0V
100
µA
High-level input current
VCC = MAX, VI = 2.7V
20
µA
Low-level input current
VCC = MAX, VI = 0.5V
–0.6
mA
Short-circuit output
VCC = MIN,, VIL = MAX,,
VIH = MIN, IOL =– MAX
currentNO TAG
Supply current (total)
ICCH
ICCL
VCC = MAX
–60
VCC = MAX
–150
mA
30
40
mA
32
40
mA
NOTES:
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 VCC = 5V, Tamb = 25°C.
3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
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, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
Tamb = +25°C
VCC = +5.0V
CL = 50pF
RL = 500Ω
TEST
CONDITION
MIN
TYP
fMAX
Maximum clock frequency
Waveform
NO TAG
110
115
tPLH
tPHL
Propagation delay
CP tp Qn
Waveform
NO TAG
4.0
4.5
5.5
6.5
1989 Aug 14
4
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF
RL = 500Ω
MAX
MIN
MAX
105
7.5
8.5
4.0
4.5
UNIT
ns
9.0
9.5
ns
Philips Semiconductors
Product specification
Quad 2-input multiplexer with storage
74F298
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
Tamb = +25°C
VCC = +5.0V
CL = 50pF
RL = 500Ω
TEST
CONDITION
PARAMETER
MIN
TYP
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF
RL = 500Ω
MAX
MIN
UNIT
MAX
ts(H)
ts(L)
Setup time, High or Low
I0n, I1n to CP
Waveform
NO TAG
2.0
2.0
2.0
2.0
ns
th(H)
th(L)
Hold time, High or Low
I0n, I1n to CP
Waveform
NO TAG
1.0
1.0
1.0
1.0
ns
ts(H)
ts(L)
Setup time, High or Low
S to CP
Waveform
NO TAG
6.0
5.0
7.0
6.0
ns
th(H)
th(L)
Hold time, High or Low
S to CP
Waveform
NO TAG
0
0
0
0
ns
tw(H)
tw(L)
CP Pulse width,
High or Low
Waveform
NO TAG
5.0
5.0
5.0
7.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
1/fMAX
Ion, I1n, S
VM
VM
CP
VM
tW(L)
ts(H)
VM
th(H)
VM
ts(L)
th(L)
tW(H)
tPHL
tPLH
VM
CP
VM
VM
VM
Qn
VM
SF00864
SF00863
Waveform 1. Clock Input to Output, Clock Pulse Width, and
Maximum Clock Frequency
Waveform 2. Data Setup and Hold Times
TEST CIRCUIT AND WAVEFORMS
VCC
VIN
tw
90%
NEGATIVE
PULSE
VM
D.U.T.
RT
CL
RL
AMP (V)
VM
10%
VOUT
PULSE
GENERATOR
90%
10%
tTHL (tf )
tTLH (tr )
tTLH (tr )
tTHL (tf )
0V
AMP (V)
90%
90%
POSITIVE
PULSE
Test Circuit for Totem-Pole Outputs
DEFINITIONS:
RL = Load resistor;
see AC ELECTRICAL CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC ELECTRICAL CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
VM
VM
10%
10%
tw
0V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
family
amplitude VM
74F
3.0V
1.5V
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
2.5ns
SF00006
1989 Aug 14
5
Philips Semiconductors
Product specification
74F298
Quad 2-input multiplexer with storage
DIP16: plastic dual in-line package; 16 leads (300 mil)
1989 Aug 14
6
SOT38-4
Philips Semiconductors
Product specification
74F298
Quad 2-input multiplexer with storage
SO16: plastic small outline package; 16 leads; body width 3.9 mm
1989 Aug 14
7
SOT109-1
Philips Semiconductors
Product specification
74F298
Quad 2-input multiplexer with storage
Data sheet status
Data sheet
status
Product
status
Definition [1]
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
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.
Product
specification
Production
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] 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.
 Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
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Document order number:
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Date of release: 10-98
9397-750-05116