HITACHI HD74ACT298

HD74AC298/HD74ACT298
Quad 2-Input Multiplexer with Storage
Description
This device is a high-speed multiplexer with storage. It selects four 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 input (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.
Features
• Outputs Source/Sink 24 mA
• HD74ACT298 has TTL-Compatible Inputs
Pin Arrangement
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
(Top view)
HD74AC298/HD74ACT298
Logic Symbol
I0a I1a I0b I1b I0c I1c I0d I1d
S
CP
Qa
Qb
Qc
Qd
Pin Names
I1a – I1d
I0a – I0d
S
CP
Qa – Qd
Source 1 Data Inputs
Source 0 Data Inputs
Select Input
Clock Pulse Input (Active Falling Edge)
Outputs
Function Table
Inputs
Outputs
Qa
Qb
Qc
Qd
L
a1
b1
c1
d1
H
a2
b2
c2
d2
QA0
QB0
QC0
QD0
S
X
2
Cp
H
HD74AC298/HD74ACT298
Logic Diagram
I1a
I0a
I1b
I0b
I1c
I0c
I1d
I0d
S
CP
R
CP
S
R
CP
Qa
S
Qa
R
CP
Qb
S
Qb
R
CP
Qc
S
Qd
Qc
Qd
DC Characteristics (unless otherwise specified)
Item
Symbol
Max
Unit
Condition
Maximum quiescent supply current
I CC
80
µA
VIN = VCC or ground, VCC = 5.5 V,
Ta = Worst case
Maximum quiescent supply current
I CC
8.0
µA
VIN = VCC or ground, VCC = 5.5 V,
Ta = 25°C
Maximum ICC/input (HD74ACT298)
I CCT
1.5
mA
VIN = VCC – 2.1 V, VCC = 5.5 V,
Ta = Worst case
AC Characteristics: HD74AC298
Ta = +25°C
CL = 50 pF
Ta = –40°C to +85°C
CL = 50 pF
Item
Symbol
VCC (V)*1
Min
Typ
Max
Min
Max
Unit
Maximum count
f max
3.3
90
—
—
70
—
MHz
5.0
110
—
—
100
—
3.3
1.0
7.0
10.0
1.0
11.5
5.0
1.0
5.0
7.5
1.0
8.5
3.3
1.0
7.5
10.0
1.0
11.5
5.0
1.0
5.5
7.5
1.0
8.5
frequency
Propagation delay
t PLH
CP to Q
Propagation delay
CP to Q
Note:
t PHL
ns
1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
3
HD74AC298/HD74ACT298
AC Operating Requirements: HD74AC298
Ta = –40°C
to +85°C
CL = 50 pF
Ta = +25°C
CL = 50 pF
Item
Symbol
VCC (V)*1 Typ
Guaranteed Minimum
Unit
Setup time, HIGH or LOW
t su
3.3
4.5
5.5
7.0
ns
5.0
2.5
4.5
5.5
3.3
–2.0
0.0
0.0
5.0
–1.0
0.0
0.0
3.3
–3.0
0.5
0.5
5.0
–1.5
0.5
0.5
3.3
3.0
5.5
7.0
5.0
3.0
4.5
5.0
D or S to CP
Hold time, HIGH or LOW
th
Dn to CPn
Hold time, HIGH or LOW
th
S to CP
Pulse with
Note:
tw
ns
ns
ns
1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
AC Characteristics: HD74ACT298
Ta = +25°C
CL = 50 pF
Ta = –40°C to +85°C
CL = 50 pF
Item
Symbol
VCC (V)*1
Min
Typ
Max
Min
Max
Unit
Maximum count
frequency
f max
5.0
70
—
—
60
—
MHz
Propagation delay
CP to Q
t PLH
5.0
1.0
6.0
10.0
1.0
11.0
ns
Propagation delay
CP to Q
t PHL
5.0
1.0
6.5
10.0
1.0
11.0
Note:
4
1. Voltage Range 5.0 is 5.0 V ± 0.5 V
HD74AC298/HD74ACT298
AC Operating Requirements: HD74ACT298
Ta = –40°C
to +85°C
CL = 50 pF
Ta = +25°C
CL = 50 pF
Item
Symbol
VCC (V)*1 Typ
Guaranteed Minimum
Unit
Setup time, HIGH or LOW
Dn or S to CP
t su
5.0
3.5
5.5
6.5
ns
Hold time, HIGH or LOW
Dn to CP
th
5.0
–5.0
1.0
1.0
ns
Hold time, HIGH or LOW
S to CP
th
5.0
–0.5
1.0
1.0
ns
Pulse with
tw
5.0
3.0
7.0
8.0
ns
Note:
1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Capacitance
Item
Symbol
Typ
Unit
Condition
Input capacitance
CIN
4.5
pF
VCC = 5.5 V
Power dissipation capacitance
CPD
30
pF
VCC = 5.0 V
5
Unit: mm
19.20
20.00 Max
1
7.40 Max
9
6.30
16
8
1.3
0.48 ± 0.10
2.54 Min 5.06 Max
2.54 ± 0.25
0.51 Min
1.11 Max
7.62
+ 0.13
0.25 – 0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-16
Conforms
Conforms
1.07 g
Unit: mm
10.06
10.5 Max
9
1
8
1.27
*0.42 ± 0.08
0.40 ± 0.06
0.10 ± 0.10
0.80 Max
*0.22 ± 0.05
0.20 ± 0.04
2.20 Max
5.5
16
0.20
7.80 +– 0.30
1.15
0° – 8°
0.70 ± 0.20
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-16DA
—
Conforms
0.24 g
Unit: mm
9.9
10.3 Max
9
1
8
0.635 Max
*0.42 ± 0.08
0.40 ± 0.06
0.15
*0.22 ± 0.03
0.20 ± 0.03
1.27
0.11
0.14 +– 0.04
1.75 Max
3.95
16
0.10
6.10 +– 0.30
1.08
0° – 8°
0.67
0.60 +– 0.20
0.25 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-16DN
Conforms
Conforms
0.15 g
Unit: mm
4.40
5.00
5.30 Max
16
9
1
8
0.65
0.13 M
1.10 Max
0.65 Max
0.10
*Dimension including the plating thickness
Base material dimension
6.40 ± 0.20
0.07 +0.03
–0.04
0.20 ± 0.06
1.0
*0.17 ± 0.05
0.15 ± 0.04
0.08
*0.22 +– 0.07
0° – 8°
0.50 ± 0.10
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
TTP-16DA
—
—
0.05 g
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received the latest product standards or specifications before final design, purchase or use.
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contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
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