HITACHI HD74BC574A

HD74BC574A
Octal D Type Flip Flops With 3 State Outputs
ADE-205-042 (Z)
Rev. 0
June 1993
Description
The HD74BC574A provides high drivability and operation equal to or better than high speed bipolar
standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5
of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight edge triger D type flip
flops with three state outputs in a 20 pin package. Data at the D inputs meeting set up requirements, are
transferred to the Q outputs on positive going transitions of the clock input. When the latch enable goes
low, data at the D inputs will be retained at the outputs until latch enable returns high again. When a high
logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what
signals are present at the other inputs and the state of the strage elements.
Features
•
•
•
•
Input/Output are at high impedance state when power supply is off.
Built in input pull up circuit can make input pins be open, when not used.
TTL level input
Wide operating temperature range
Ta = –40 to + 85°C
HD74BC574A
Function Table
Inputs
Output Control
D
Output Q
L
H
H
L
L
L
L
X
Q0
X
X
Z
L
H
H
L
X
Z
:
:
:
:
:
Q0 :
CK
High level
Low level
Immaterial
High impedance
Low to high transition
Level of Q before the indicated steady state input conditions were established.
Pin Arrangement
Output
Control
1
20
VCC
1D
2
19
1Q
2D
3
18
2Q
3D
4
17
3Q
4D
5
16
4Q
5D
6
15
5Q
6D
7
14
6Q
7D
8
13
7Q
8D
9
12
8Q
10
11
CK
GND
(Top view)
2
HD74BC574A
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage
VCC
–0.5 to +7.0
V
Input diode current
I IK
±30
mA
Input voltage
VIN
–0.5 to +7.5
V
Output voltage
VOUT
–0.5 to +7.5
V
Off state output voltage
VOUT(off)
–0.5 to +5.5
V
Storage temperature
Tstg
–65 to +150
°C
Note:
1. The absolute maximum ratings are values which must not individually be exceeded, and
furthermore, no two of which may be realized at the same time.
Recommended Operating Conditions
Item
Symbol
Min
Typ
Max
Unit
Supply voltage
VCC
4.5
5.0
5.5
V
Input voltage
VIN
0
—
VCC
V
Output voltage
VOUT
0
—
VCC
V
Topr
–40
—
85
°C
t r, t f
0
—
8
ns/V
Operating temperature
1
Input rise/fall time*
Note:
1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
3
HD74BC574A
Logic Diagram
Output
Control
1D
D Q
CK
1Q
2D
D Q
CK
2Q
3D
D Q
CK
3Q
4D
D Q
CK
4Q
8D
D Q
CK
8Q
CK
4
HD74BC574A
Electrical Characteristics (Ta = –40°C to +85°C)
Item
Symbol
Input voltage
Output voltage
Min
Max
Unit
VIH
2.0
—
V
VIL
—
0.8
V
4.5
2.4
—
V
I OH = –3 mA
4.5
2.0
—
V
I OH = –15 mA
4.5
—
0.4
V
I OL = 24 mA
4.5
—
0.5
V
I OL = 48 mA
VOH
VOL
VCC (V)
Test Conditions
Input diode voltage
VIK
4.5
—
–1.2
V
I IN = –18 mA
Input current
II
5.5
—
–250
µA
VIN = 0 V
5.5
—
1.0
µA
VIN = 5.5 V
5.5
—
100
µA
VIN = 7.0 V
1
Short circuit output current*
I OS
5.5
–100
–225
mA
VIN = 0 or 5.5 V
Off state output current
I OZH
5.5
—
50
µA
VO = 2.7 V
I OZL
5.5
—
–50
µA
VO = 0.5 V
I CCL
5.5
—
29.5
mA
VIN = 0 or 5.5 V
All outputs is “L”
I CCH
5.5
—
2.5
mA
VIN = 0 or 5.5 V
All outputs is “H”
I CCZ
5.5
—
2.5
mA
VIN = 0 or 5.5 V
All outputs is “Z”
I CCT*2
5.5
—
1.5
mA
VIN = 3.4 or 0.5 V
Supply current
Notes: 1. Not more than one output should be shorted at a time and duration of the short circuit should not
exceed one second.
2. When input by the TTL level, it shows I CC increase at per one input pin.
5
HD74BC574A
Switching Test Method (CL = 50 pF)
Ta = 25°C
VCC = 5.0 V
Ta = –40 to 85°C
VCC = 5.0 V ±10%
Min
Max
Min
Max
Unit
Test conditions
CK → Q t PLH
3.0
8.0
3.0
10.0
ns
See under figure
delay time
t PHL
3.0
8.0
3.0
10.0
Output enable time
t ZH
3.0
9.0
3.0
11.0
t ZL
3.0
9.0
3.0
11.0
t HZ
3.0
8.0
3.0
10.0
t LZ
3.0
8.0
3.0
10.0
t s (H)
2.0
—
2.0
—
t s (L)
2.0
—
2.0
—
t h(H)
2.0
—
2.0
—
t h(L)
2.0
—
2.0
—
t W (H)
6.0
—
6.0
—
t W (L)
6.0
—
6.0
—
Input capacitance
CIN
3.0 (Typ) —
—
pF
VIN = VCC or GND
Output capacitance
CO
15.0 (Typ)
—
pF
VO = VCC or GND
Item
Symbol
Propagation
Output disable time
Setup time
Hold time
Pulse width
ns
ns
ns
ns
ns
Test Circuit
VCC
VCC
Input
Pulse Generator
Zout = 50 Ω
Pulse Generator
Zout = 50 Ω
Notes:
6
1.
2.
Input
See Function Table
Output
OC
500 Ω
1Q to 8Q
1D to 8D
CK
CL includes probe and jig capacitance.
OPEN: t PLH , t PHL , t ZH , t HZ ,th, t s tw
7 V: t ZL, t LZ
CL =
50 pF
450 Ω
50 Ω Scope
*2
OPEN
7V
HD74BC574A
Waveforms-1
tr
tf
90%
1.5 V
Input
CK
3V
90%
1.5 V
10%
1.5 V
10%
0V
tr
tf
90%
Input
D
3V
90%
10%
10%
0V
t PLH
t PHL
VOH
Output
Q
1.5 V
1.5 V
VOL
Waveforms-2
tr
tf
90%
1.5 V
Input
CK
10%
ts
3V
90%
1.5 V
10%
tw
0V
th
3V
Input
D
1.5 V
1.5 V
0V
7
HD74BC574A
Waveforms-3
tf
Output
Control
tr
90%
1.5 V
90%
1.5 V
10%
10%
t ZL
3V
0V
t LZ
3.5 V
1.5 V
Waveform–A
VOL + 0.3 V
t ZH
VOH – 0.3 V
Waveform–B
VOL
t HZ
VOH
1.5 V
0V
Notes: 1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveform: PRR = 1 MHz, duty cycle 50%
3. Waveform-A shows input conditions such that the output is “L” level when enable by the output
control.
4. Waveform-B shows input conditions such that the output is “H” level when enable by the output
control.
8
HD74BC574A
Package Dimensions
Unit: mm
9
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.
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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.
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written approval from Hitachi.
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products.
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