HD151240
Octal Buffers/Line Drivers With 3 State Outputs
ADE-205-595 (Z)
1st. Edition
Dec. 2000
Description
The HD151240 using CMOS process, provides high speed and high drivability equivalent to HD74LS240
with super low power dissipation. The device has eight inverter drivers (three state outputs) in 20 pin
package. Each four drivers
construct a group and the two groups are controlled separately by 1G and 2
G
which enable the output at
low level. Power up down protection function keeps the output in high impedance state at low V
C C
regardless of the state in enable inputs.
Features
•
High speed
•
High output current
tpd = 10 ns (Typ)
I
OH
= –15 mA
I
OL
= 24 mA
•
Both input and output is TTL level
•
Wide operating temperature: Ta = –40 to +85°C
•
Both input and output is high impedance state at supply off
•
The function provides power up down protection
HD151240
Pin Arrangement
1G 1
1A1 2
2Y4 3
1A2 4
2Y3 5
1A3 6
2Y2 7
1A4 8
2Y1 9
GND 10
20 V
CC
19 2G
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
(Top view)
Function Table
Inputs
G
H
L
L
H
L
Z
X
:
:
:
:
High level
Low level
High impedance
Irrelevant
A
X
H
L
Output Y
Z
L
H
2
HD151240
Absolute Maximum Ratings
(Ta = 25°C)
Item
Supply Voltage
Input Voltage (G, A)
Output Voltage
Power Dissipation
Storage Temperature
Note:
Symbol
V
CC
V
IN
V
OUT
P
T
Tstg
Ratings
–0.5 to +7.0
–0.5 to +7.0
–0.5 to +5.5
500
–65 to +150
Unit
V
V
V
mW
°C
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
Supply Voltage
Output Current
Symbol
V
CC
I
OH
I
OL
Operating Temperature
Input Rise/Fall Time*
1
Note:
Topr
t
r
, t
f
Min
4.5
—
—
–40
0
Typ
5.0
—
—
25
—
Max
5.5
–25
24
85
250
Unit
V
mA
mA
°C
ns
1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
3
HD151240
Electrical Characteristics
(Ta = –40°C to +85°C)
Item
Input Voltage
Symbol
V
IH
V
IL
Output Voltage
V
OH
V
CC
(V) Min
—
—
4.5
4.5
V
OL
4.5
4.5
Off State Output Current
I
OZ
I
OZ(off)
Input Current
I
IN
I
IN(off)
Short Circuit Output
Current*
1
Supply Current
I
OS
I
CC
I
CCT
*
2
5.5
0
5.5
0
5.5
5.5
5.5
2.0
—
2.4
2.0
—
—
—
—
—
—
–40
—
—
Max
—
0.8
—
—
0.4
0.5
±5.0
±5.0
±1.0
±1.0
Unit Conditions
V
V
V
V
V
V
µA
µA
µA
µA
I
OH
= –3 mA, V
IN
= V
CC
– 2.1 V or 0.5 V
I
OH
= –15 mA, V
IN
= V
CC
– 2.1 V or 0.5 V
I
OL
= 12 mA, V
IN
= V
CC
– 2.1 V or 0.5 V
I
OL
= 24 mA, V
IN
= V
CC
– 2.1 V or 0.5 V
V
OUT
= V
CC
or GND
V
OUT
= 5.5 V
V
IN
= V
CC
or GND
V
IN
= 5.5 V
–225 mA
0.5
1.5
mA I
OUT
= 0 mA, V
IN
= V
CC
or GND
mA V
IN
= V
CC
– 2.1 V or 0.5 V
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 1 pin.
Switching Characteristics
(C
L
= 50 pF)
Ta = 25°C
V
CC
= 5
Item
Symbol
Min
3.0
3.0
0.0
0.0
3.0
3.0
3.0
3.0
5.0 (Typ)
12.0 (Typ)
Max
15.0
15.0
10.0
10.0
25.0
25.0
25.0
25.0
Ta = –40 to +85°C
V
CC
= 5 V±10 %
Min
3.0
3.0
0.0
0.0
3.0
3.0
3.0
3.0
—
—
Max
18.0
18.0
10.0
10.0
30.0
30.0
30.0
30.0
pF
pF
V
IN
= V
CC
or GND
V
O
= V
CC
or GND
ns
ns
ns
Unit
ns
Conditions
See next page
Propagation Delay Time t
PLH
t
PHL
Output Rise Time
Output Fall Time
Output Enable Time
t
TLH
t
THL
t
ZH
t
ZL
Output Disable Time
t
HZ
t
LZ
Input Capacitance
Output Capacitance
C
IN
C
O
4
HD151240
Test Circuit 1
V
CC
V
CC
R
L
=
1k
Ω
Output
G
S1
C
L
=
50 pF
1Y1
Input
See Function Table
1A1
Pulse Generator
Z
out
= 50
Ω
1A2
1Y2
1Y3
1A4
1Y4
R
L
=
1k
Ω
1A3
Same as load circuit
Same as load circuit
Same as load circuit
Notes:
1.
2.
3.
C
L
includes probe and jig capacitance.
2G, 2A1-2A4 to 2Y1-2Y4 are idential to above load circuit.
S1 is a input/output switch.
Waveforms 1
t
f
90 %
Input
10 %
1.3 V
t
PHL
Output
S1 : OPEN
90 %
1.3 V
10 %
t
THL
Notes:
1.
2.
t
r
= 6.0 ns, t
f
= 6.0 ns
Input waveforms: PRR = 1 MHz, duty cycle 50%
1.3 V
10 %
S1 : OPEN
t
TLH
90 %
1.3 V
10 %
t
PLH
90 %
V
OH
V
OL
3.0 V
0V
t
r
5
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