HITACHI HD74AC259

HD74AC259
8-bit Addressable Latch
Description
The HD74AC259 is a high-speed 8-bit addressable latch designed for general purpose storage applications
in digital systems. It is a multifunctional device capable or storing single line data in eight addressable
latches, and also a 1-of-8 decoder and demultiplexer with active HIGH outputs. The device also
incorporates an active LOW Common Clear for resetting all latches, as well as an active LOW Enable.
Features
•
•
•
•
•
•
•
Serial-to-Parallel Conversion
Eight Bits of Storage with Output of Each Bit Available
Random (Addressable) Data Entry
Active High Demultiplexing or Decoding Capability
Easily Expandable
Common Clear
Outputs Source/Sink 24 mA
HD74AC259
Pin Arrangement
A0 1
16 VCC
A1 2
15 MR
A2 3
14 E
Q0 4
13 D
Q1 5
12 Q7
Q2 6
11 Q6
Q3 7
10 Q5
GND 8
9 Q4
(Top view)
Logic Symbol
E
D
A0
A1
A2
MR Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Pin Names
A0 – A2
D
E
MR
Q0 – Q7
2
Address Inputs
Data Inputs
Enable Input (Active LOW)
Master Reset (Active LOW)
Latch Outputs
HD74AC259
Logic Diagram
Q7
Q6
Q5
MR
Q4
A2
Q3
A1
A0
Q2
Q1
D
E
Q0
3
HD74AC259
Function Table
Inputs
Outputs
Operating Mode
MR E
D
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Master reset
L
H
X
X
X
X
L
L
L
L
L
L
L
L
Demultiplex
L
L
d
L
L
L
Q=d L
L
L
L
L
L
L
(Active HIGH
L
L
d
H
L
L
L
Q=d L
L
L
L
L
L
Decoder when
L
L
d
L
H
L
L
L
Q=d L
L
L
L
L
D = H)
L
L
d
H
H
L
L
L
L
Q=d L
L
L
L
L
L
d
L
L
H
L
L
L
L
Q=d L
L
L
L
L
d
H
L
H
L
L
L
L
L
Q=d L
L
L
L
d
L
H
H
L
L
L
L
L
L
Q=d L
L
L
d
H
H
H
L
L
L
L
L
L
L
Q=d
Store (Do nothing)
H
H
X
X
X
X
q0
q1
q2
q3
q4
q5
q6
q7
Addressable latch
H
L
d
L
L
L
Q = d q1
q2
q3
q4
q5
q6
q7
H
L
d
H
L
L
q0
Q = d q2
q3
q4
q5
q6
q7
H
L
d
L
H
L
q0
q1
Q = d q3
q4
q5
q6
q7
H
L
d
H
H
L
q0
q1
q2
Q = d q4
q5
q6
q7
H
L
d
L
L
H
q0
q1
q2
q3
Q = d q5
q6
q7
H
L
d
H
L
H
q0
q1
q2
q3
q4
Q = d q6
q7
H
L
d
L
H
H
q0
q1
q2
q3
q4
q5
Q = d q7
H
L
d
H
H
H
q0
q1
q2
q3
q4
q5
q6
H
L
X
d
q
:
:
:
:
:
Q=d
High Voltage Level
Low Voltage Level
Immaterial
High or Low data one setup time prior to the Low-to-High Enable transition.
Lower case letters indicate the state of the referenced output established during the last cycle in
which it was addressed or cleared.
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
4
HD74AC259
AC Characteristics: HD74AC259
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 clock
f max
3.3
65
—
—
60
—
MHz
5.0
110
—
—
95
—
3.3
1.0
8.5
14.5
1.0
16.5
5.0
1.0
6.5
9.0
1.0
10.5
3.3
1.0
7.0
10.5
1.0
12.0
5.0
1.0
5.5
7.5
1.0
8.5
3.3
1.0
7.0
10.5
1.0
12.0
5.0
1.0
5.5
7.5
1.0
8.5
3.3
1.0
11.5
18.5
1.0
21.5
5.0
1.0
8.0
11.5
1.0
14.0
3.3
1.0
11.5
18.5
1.0
21.0
5.0
1.0
8.0
11.5
1.0
13.5
3.3
1.0
9.0
15.0
1.0
17.0
5.0
1.0
6.5
9.0
1.0
10.5
3.3
1.0
9.0
14.0
1.0
16.0
5.0
1.0
6.5
8.5
1.0
10.0
frequency
Propagation delay
t PHL
MR to Q n
Propagation delay
t PLH
Dn to Q n
Propagation delay
t PHL
Dn to Q n
Propagaion delay
t PLH
An to Q n
Propagation delay
t PHL
An to Q n
Propagation delay
t PLH
E to Q
Propagation delay
E to Q n
Note:
t PHL
ns
ns
ns
ns
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
5
HD74AC259
AC Operating Requirements: HD74AC259
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
1.0
3.5
3.5
ns
5.0
0.0
3.0
3.0
3.3
0.5
2.0
2.0
5.0
0.5
2.0
2.0
3.3
1.0
6.0
7.0
5.0
0.0
4.5
5.0
3.3
–3.0
0.0
0.0
5.0
–1.0
0.0
0.0
3.3
3.0
5.5
7.0
5.0
3.0
4.5
5.0
D to E
Hold time, HIGH or LOW
th
D to E
Setup time, HIGH or LOW
t su
An to E
Hold time, HIGH or LOW
th
An to E
Pulse width
Note:
tw
1. Voltage Range 3.3 is 3.3 V ± 0.3 V
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
3.5
pF
VCC = 5.0 V
6
ns
ns
ns
ns
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
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
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.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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