1/10
August 2001
s
HIGH SPEED:
t
PD
= 11ns (TYP.) at V
CC
= 6V
s
LOW POWER DISSIPATION:
I
CC
= 4
A(MAX.) at T
A
=25C
s
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
s
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 6mA (MIN)
s
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
s
SAME FUNCTION OF HC240 PLUS HIGH
TO LOW LEVEL LOGIC CONVERSION
CAPABILITY
s
LATCH UP FREE OPERATION ALSO WHEN
V
IH
IS HIGHER THAN V
CC
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 240
DESCRIPTION
The 74HC240HV is an advanced high-speed
CMOS OCTAL BUS BUFFER (3-STATE)
fabricated with silicon gate C
2
MOS technology.
Performing the same function of their non HV
counterpart, they have a particular input
configuration which allows all inputs to be driven
by logic levels exceeding the supply voltage.
This make them particularly suitable in systems
where mixed 3V/5V logic devices need to be
interfaced.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
NOTE : BOTH DEVICES DO NOT MEET 2KV
ESD RATING.
M74HC240HV
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (INVERTED)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACK.
TUBE
T & R
DIP
M74HC240HVB1R
SOP
M74HC240HVM1R M74HC240HVRM13TR
TSSOP
M74HC240HVTTR
TSSOP
DIP
SOP
M74HC240HV
2/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don't Care
Z : High Impedance
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
C; derate to 300mW by 10mW/
C from 65
C to 85
C
RECOMMENDED OPERATING CONDITIONS
PIN No
SYMBOL
NAME AND FUNCTION
1
1G
Output Enable Input
2, 4, 6, 8
1A1 to 1A4
Data Inputs
9, 7, 5, 3
2Y1 to 2Y4
Data Outputs
11, 13, 15,
17
2A1 to 2A4
Data Inputs
18, 16, 14,
12
1Y1 to 1Y4
Data Outputs
19
2G
Output Enable Input
10
GND
Ground (0V)
20
V
CC
Positive Supply Voltage
INPUTS
OUTPUT
G
An
Yn
L
L
H
L
H
L
H
X
Z
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.5 to +13
V
V
I
DC Input Voltage
-0.5 to +13
V
V
O
DC Output Voltage
-0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
-
20
mA
I
OK
DC Output Diode Current
100
mA
I
O
DC Output Current
35
mA
I
CC
or I
GND
DC V
CC
or Ground Current
100
mA
P
D
Power Dissipation
500(*)
mW
T
stg
Storage Temperature
-65 to +150
C
T
L
Lead Temperature (10 sec)
300
C
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
2 to 6
V
V
I
Input Voltage
0 to 12
V
V
O
Output Voltage
0 to V
CC
V
T
op
Operating Temperature
-55 to 125
C
t
r
, t
f
Input Rise and Fall Time
V
CC
= 2.0V
0 to 1000
ns
V
CC
= 4.5V
0 to 500
ns
V
CC
= 6.0V
0 to 400
ns
M74HC240HV
3/10
DC SPECIFICATIONS
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
V
IH
High Level Input
Voltage
2.0
1.5
1.5
1.5
V
4.5
3.15
3.15
3.15
6.0
4.2
4.2
4.2
V
IL
Low Level Input
Voltage
2.0
0.5
0.5
0.5
V
4.5
1.35
1.35
1.35
6.0
1.8
1.8
1.8
V
OH
High Level Output
Voltage
2.0
I
O
=-20
A
1.9
2.0
1.9
1.9
V
4.5
I
O
=-20
A
4.4
4.5
4.4
4.4
6.0
I
O
=-20
A
5.9
6.0
5.9
5.9
4.5
I
O
=-6.0 mA
4.18
4.31
4.13
4.10
6.0
I
O
=-7.8 mA
5.68
5.8
5.63
5.60
V
OL
Low Level Output
Voltage
2.0
I
O
=20
A
0.0
0.1
0.1
0.1
V
4.5
I
O
=20
A
0.0
0.1
0.1
0.1
6.0
I
O
=20
A
0.0
0.1
0.1
0.1
4.5
I
O
=6.0 mA
0.17
0.26
0.33
0.40
6.0
I
O
=7.8 mA
0.18
0.26
0.33
0.40
I
I
Input Leakage
Current
12.0
V
I
= V
CC
or GND
0.1
1
1
A
I
IH
Input Leakage
Current
2.0
V
I
= 12V
0.1
1
1
A
I
OZ
High Impedance
Output Leakage
Current
12.0
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
0.5
5
10
A
I
CC
Quiescent Supply
Current
12.0
V
I
= V
CC
or GND
4
40
80
A
M74HC240HV
4/10
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, Input t
r
= t
f
= 6ns)
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/8 (per circuit)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
TLH
t
THL
Output Transition
Time
2.0
50
25
60
75
90
ns
4.5
7
12
19
18
6.0
6
10
13
15
t
PLH
t
PHL
Propagation Delay
Time
2.0
50
40
110
140
165
ns
4.5
13
22
28
33
6.0
11
19
24
28
2.0
150
52
135
170
205
ns
4.5
17
27
34
41
6.0
14
23
29
35
t
PZL
t
PZH
High Impedance
Output Enable
Time
2.0
50
R
L
= 1 K
52
135
170
205
ns
4.5
17
27
34
41
6.0
14
23
29
35
2.0
150
R
L
= 1 K
63
165
205
250
ns
4.5
21
33
41
50
6.0
18
28
35
43
t
PLZ
t
PHZ
High Impedance
Output Disable
Time
2.0
50
R
L
= 1 K
40
135
170
205
ns
4.5
19
27
34
41
6.0
15
23
29
35
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
C
IN
Input Capacitance
5.0
5
10
10
10
pF
C
OUT
Output
Capacitance
5.0
10
pF
C
PD
Power Dissipation
Capacitance (note
1)
5.0
33
pF
M74HC240HV
5/10
TEST CIRCUIT
C
L
= 50pF/150pF or equivalent (includes jig and probe capacitance)
R
1
= 1K
or equivalent
R
T
= Z
OUT
of pulse generator (typically 50
)
WAVEFORM 1: PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
TEST
SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
V
CC
t
PZH
, t
PHZ
GND
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