M54HC240HV/241HV
M74HC240HV/241HV
April 1993
HC240HV: INVERTED - HC241HV NON INVERTED
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
B1R
(Plastic Package)
ORDER CODES :
M54HCXXXHVF1R
M74HCXXXHVM1R
M74HCXXXHVB1R
F1R
(Ceramic Package)
M1R
(Micro Package)
PIN CONNECTION (top view)
.
HIGH SPEED
t
PD
= 12 ns (TYP.) at V
CC
= 5V
.
LOW POWER DISSIPATION
I
CC
= 4
A (MAX.) at T
A
= 25
o
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
INL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN)
.
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
.
SAME FUNCTION OF HC240/241 PLUS HIGH
TO LOW LEVEL LOGIC CONVERSION CAPA-
BILITY
.
LATCH UP FREE OPERATION ALSO WHEN
V
IH
IS HIGHER THAN V
CC
DESCRIPTION
The M54/74HC240HV and HC241HV are high
speed CMOS OCTAL BUS BUFFERs fabricated in
silicon gate C
2
MOS technology.
They have the same high speed performance of
LSTTL combined with true CMOS low power
consumption.
Performing the same
function of their non HV
counterpart,
they
have
a
particularl
input
configuration which allows all inputs to be driven by
logic levels exceeding the supply voltage.
This makes 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
HC241HV
HC240HV
1/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION (HC240HV)
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 Enabel Input
10
GND
Ground (0V)
20
V
CC
Positive Supply Voltage
PIN DESCRIPTION (HC241HV)
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 Enabel Input
10
GND
Ground (0V)
20
V
CC
Positive Supply Voltage
IEC LOGIC SYMBOLS
HC241HV
HC240HV
M54/M74HC240HV/241HV
2/10
TRUTH TABLE
INPUT
OUTPUT
G
G (HC241)
An
Yn (HC240HV)
Yn (HC241HV)
L
H
L
H
L
L
H
H
L
H
H
L
X
Z
Z
X: "H" or "L"
Z: High impedance
ABSOLUTE MAXIMUM RATINGS
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 Source Sink Current Per Output Pin
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
o
C
T
L
Lead Temperature (10 sec)
300
o
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
(*) 500 mW:
65
o
C derate to 300 mW by 10mW/
o
C: 65
o
C to 85
o
C
RECOMMENDED OPERATING CONDITIONS
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: M54HC Series
M74HC Series
-55 to +125
-40 to +85
o
C
o
C
t
r
, t
f
Input Rise and Fall Time
V
CC
= 2 V
0 to 1000
ns
V
CC
= 4.5 V
0 to 500
V
CC
= 6 V
0 to 400
M54/M74HC240HV/241HV
3/10
TEST CIRCUIT I
CC
(Opr.)
HC240HV
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25
o
C
54HC and 74HC
-40 to 85
o
C
74HC
-55 to 125
o
C
54HC
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
Output Enable
Time
2.0
50
R
L
= 1K
52
135
170
205
ns
4.5
17
27
34
41
6.0
14
23
29
35
2.0
150
R
L
= 1K
63
165
205
250
ns
4.5
21
33
41
50
6.0
18
28
35
43
t
PLZ
t
PHZ
Output Disable
Time
2.0
50
R
L
= 1K
40
135
170
205
ns
4.5
19
27
34
41
6.0
15
23
29
35
C
IN
Input Capacitance
5
10
10
10
pF
C
OUT
Output
Capacitance
10
pF
C
PD
(*)
Power Dissipation
Capacitance
33
pF
(*) 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 operting current can be obtained by the following equation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
/8 (per circuit)
M54/M74HC240HV/241HV
5/10
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