TECHNICAL DATA
Octal Buffer/Line driver, INV (3-State)
IN74VHC240 is high-speed logic IC made by CMOS
technology and designed for use in high-performance
calculating systems with a wide supply voltage range.
As for operation speed, IN74VHC240 can be compared
with equivalent bipolar ICs based on Schottky TTL and two
times surpasses ICs of IN74НС series.
IN74VHC240 tolerates operation under conditions when
voltage on input is exceeded up to 7V without affecting
characteristics and IC reliability. This possibility allows to
use IN74VHC240 in radio-electronic devices for interfacing
with supply voltages 5V and 3V, eliminate IC failure under
supply voltage source emergency outage.
Use of output edge shaping block in the microcircuit
allows to reduce noise amplitude of noises when switching
outputs into the same state simultaneously.
Input and output levels of IN74VHC240 are compatible
with CMOS levels
IN74VHC240
ORDERING INFORMATION
IN74VHC240N Plastic
IN74VHC240DW SOIC
T
A
= -40° to 85° C for all packages
Features:
•
•
•
•
•
•
•
•
•
•
.
Supply voltage range 2.0 to 5.5 V.
Output current 8 mA.
Low consumption current: 0.2 mkA (typical value) at
Та
= 25
°С.
Latchup current not less than 300 mA at
Та
= 85
°С.
Tolerable value of static potential not less than 2000 V as per human body model
(HBM) and not less than 200 V as per machine model (ММ).
Ambient operation temperature minus 40 to plus 85
°С.
Balanced signal propagation delay.
Ensures voltage exceeding mode on input
Low noise level at the simultaneous switching of outputs in the same state: V
OLP
= 0.8
V (max).
For pins and functions, compatible with IN74HC240.
1
IN74VHC240
Absolute maximum conditions*
Parameter, unit
Supply voltage, V
Input voltage, V
Output voltage, V
Input diode current, mA
Current of common output and supply
output, mA
Output current, mA
Output diode current, mA
Dissipated power, mW
Symbol
min
V
CC
Vin
Vout
Iik
Icc
Iout
Iok
Pd
-0.5
-0.5
-0.5
–
–
–
–
–
Value
max
7.0
7.0
Vcc+0.5V
-20
±
75
±
25
±
20
180
*Under absolute maximum conditions operation of microcircuit is not guaranteed. Operation is
guaranteed under maximum conditions
Maximum conditions
Parameter, unit
Symbol
min
Supply voltage, V
Input voltage,V
Output voltage, V
Output current, mA
Input rise and fall time, ns/V
at Vcc = (3.3 ± 0.3) V
at Vcc = (5.0 ± 0.5) V
V
CC
Vin
Vout
Iout
t
LH
, t
HL
2.0
0
0
–
0
0
Value
max
5.5
V
CC
V
CC
±
8.0
100
20
3
IN74VHC240
AC electrical characteristics
(t
LH
= t
HL
= 3.0 ns)
Symbol
t
PHL
, t
PLH
Parameter
Test
conditi V
CC
, V
ons
Value
C
L
,
pF
15
50
15
50
50
50
15
50
15
50
50
50
–40
to 85
°C
min max min max
–
7.5
–
9.0
–
11.0
–
12.5
–
5.5
–
6.5
–
7.5
–
8.5
–
14.0
–
16.0
25
°C
–
–
–
–
–
–
–
9.2
10.6
14.1
7.3
9.3
1.5
1.0
–
–
–
–
–
–
–
10.5
12.5
16.0
8.5
10.5
1.5
1.0
Unit
ns
Propagation delay time Figure 3.3 ± 0.3
when switching "on", 1
"off"
5.0 ± 0.5
t
PHZ
, t
PLZ
Propagation delay time Figure 3.3 ± 0.3
under transition from 2
high , low level into "off"
5.0 ± 0.5
state
t
PZH
, t
PZL
Propagation delay time Figure
under transition from 2
«off» state into high, low
level
t
OSLH
, t
OSHL
Propagation
delays –
difference
between
outputs
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.5 ± 0.5
Capacitance characteristics
Symbol
C
I
C
O
C
РD
Parameter
Input capacity
Output capacity
Dynamic capacity
Test conditions
-
-
V
I
= 0 V orV
CC
V
CC
, V
5.0
5.0
5.0
Value
25
°C
min
max
10
12
34
Unit
pF
pF
pF
Noise characteristics
(C
L
= 50 pF)
Parameter
Symbol
V
OLP
V
OLV
V
IHD
V
ILD
V
CC
, V
Positive noise of low output voltage
5.0
Negative noise of low output 5.0
voltage
Input dynamic high voltage
Input dynamic low voltage
5.0
5.0
min
-
-0.9
3.5
-
Value
max
0.9
-
-
1.5
Unit
V
5
嵌入式系统
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