Hitachi HC74HC444 Quad. tridirectional bus transceiver(with noninverted/inverted 3-state outputs) Datasheet

HD74HC442/HD74HC443/HC74HC444
Quad. Tridirectional Bus Transceiver
(with noninverted 3-state outputs)
Quad. Tridirectional Bus Transceiver
(with inverted 3-state outputs)
Quad Tridirectional Bus Transceiver
(with noninverted/inverted 3-state outputs)
Description
These bus transceivers are designed for a synchronous three-way communication between four-line data
buses. They give the designer a choice of selecting inverting, noninverting or a combination of inverting
and noninverting data paths with 3-state outputs.
The S 0 and S1 inputs select the bus from which data are to be transferred. The G inputs enable the bus or
buses to which data are to be transferred. The port for any bus selected for input and any other bus not
enabled for output will be at high impedance.
Features
•
•
•
•
•
High Speed Operation
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
HD74HC442/HD74HC443HD74HC444
Function Table
Inputs
Transfers Between Buses
CS
S1
S0
GA
GB
GC
HD74HC442
HD74HC443
HD74HC444
H
X
X
X
X
X
None
None
None
X
H
H
X
X
X
None
None
None
X
X
X
H
H
H
None
None
None
X
L
L
X
H
H
None
None
None
X
L
H
H
X
H
None
None
None
X
H
L
H
H
X
None
None
None
L
L
L
X
L
L
A → B, A → C
A → B, A → C
A → B, A → C
L
L
H
L
X
L
B → C, B → A
B → C, B → A
B → C, B → A
L
H
L
L
L
X
C → A, C → B
C → A, C → B
C → A, C → B
L
L
L
X
L
H
A→B
A→B
A→B
L
L
H
H
X
L
B→C
B→C
B→C
L
H
L
L
H
X
C→A
C→A
C→A
L
L
L
X
H
L
A→C
A→C
A→C
L
L
H
L
X
H
B→A
B→A
B→A
L
H
L
H
L
X
C→B
C→B
C→B
2
HD74HC442/HD74HC443/HD74HC444
Pin Arrangement
CS 1
20 VCC
B1 2
19 GC
C1 3
18 GB
C2 4
17 GA
B2 5
16 A1
B3 6
15 A2
C3 7
14 A3
C4 8
13 A4
B4 9
12 S1
GND 10
11 S0
(Top view)
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage range
VCC
–0.5 to +7.0
V
Input voltage
VIN
–0.5 to VCC + 0.5
V
Output voltage
VOUT
–0.5 to VCC + 0.5
V
Output current
I OUT
±35
mA
DC current drain per VCC GND
I CC, I GND
±75
mA
DC input diode current
I IK
±20
mA
DC output diode current
I OK
±20
mA
Power Dissipation per package
PT
500
mW
Storage temperature
Tstg
–65 to +150
°C
3
HD74HC442/HD74HC443HD74HC444
Logic Diagram
HD74HC442
S0
A1
B1
C1
A2
B2
C2
A3
B3
C3
A4
B4
C4
4
S1
GA GH GC CS
HD74HC442/HD74HC443/HD74HC444
HD74HC443
S0
S1
GA GH GC CS
A1
B1
C1
A2
B2
C2
A3
B3
C3
A4
B4
C4
5
HD74HC442/HD74HC443HD74HC444
HD74HC444
S0
A1
B1
C1
A2
B2
C2
A3
B3
C3
A4
B4
C4
6
S1
GA GH GC CS
HD74HC442/HD74HC443/HD74HC444
DC Characteristics
Ta = –40 to
+85°C
Ta = 25°C
Item
Symbol
VCC (V) Min Typ Max Min
Max
Unit
Input voltage
VIH
2.0
1.5 —
—
1.5
—
V
4.5
3.15 —
—
3.15
—
6.0
4.2 —
—
4.2
—
2.0
—
—
0.5
—
0.5
4.5
—
—
1.35 —
1.35
6.0
—
—
1.8
—
1.8
2.0
1.9 2.0 —
1.9
—
4.5
4.4 4.5 —
4.4
—
6.0
5.9 6.0 —
5.9
—
4.5
4.18 —
—
4.13
—
I OH = –6 mA
6.0
5.68 —
—
5.63
—
I OH = –7.8 mA
2.0
—
0.0 0.1
—
0.1
4.5
—
0.0 0.1
—
0.1
6.0
—
0.0 0.1
—
0.1
4.5
—
—
0.26 —
0.33
I OL = 6 mA
6.0
—
—
0.26 —
0.33
I OL = 7.8 mA
VIL
Output voltage
VOH
VOL
Test Conditions
V
V
V
Vin = VIH or VIL I OH = –20 µA
Vin = VIH or VIL I OL = 20 µA
Off-state output
current
I OZ
6.0
—
—
±0.5 —
±5.0
µA
Vin = VIH or VIL,
Vout = VCC or GND
Input current
Iin
6.0
—
—
±0.1 —
±1.0
µA
Vin = VCC or GND
Quiescent supply
current
I CC
6.0
—
—
4.0
40
µA
Vin = VCC or GND, Iout = 0 µA
—
7
HD74HC442/HD74HC443HD74HC444
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
+85°C
Ta = 25°C
VCC (V) Min Typ Max Min
Max
Unit
Propagation delay t PLH
2.0
—
—
200 —
250
ns
time
4.5
—
—
40
—
50
6.0
—
—
34
—
43
Item
Symbol
t PHL
Output enable
t ZH
2.0
—
—
150 —
190
time
t ZL
4.5
—
—
30
—
38
6.0
—
—
26
—
33
Output disable
t HZ
2.0
—
—
150 —
190
time
t LZ
4.5
—
—
30
—
38
6.0
—
—
26
—
33
Output rise/fall
t TLH
2.0
—
—
60
—
75
time
t THL
4.5
—
—
12
—
15
6.0
—
—
10
—
13
—
—
5
10
—
10
Input capacitance
8
Cin
ns
ns
ns
pF
Test Conditions
Unit: mm
24.50
25.40 Max
6.30
11
1
7.00 Max
20
10
1.30
2.54 ± 0.25
0.48 ± 0.10
0.51 Min
1.27 Max
2.54 Min 5.08 Max
0.89
7.62
+ 0.11
0.25 – 0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-20N
—
Conforms
1.26 g
Unit: mm
12.6
13 Max
11
1
10
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
20
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-20DA
—
Conforms
0.31 g
Unit: mm
12.8
13.2 Max
11
1
10
0.20 ± 0.10
0.935 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*0.27 ± 0.05
0.25 ± 0.04
2.65 Max
7.50
20
0.25
10.40 +– 0.40
1.45
0° – 8°
0.57
0.70 +– 0.30
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-20DB
Conforms
—
0.52 g
Cautions
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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
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