Philips 74LVC240APW, 74LVC240ADB, 74LVC240AD Datasheet
INTEGRATED CIRCUITS
74LVC240A
Octal buffer/line driver with 5-volt tolerant
inputs/outputs; inverting (3-State)
Product specification
IC24 Data Handbook
1998 May 20
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt
tolerant inputs/outputs; inverting (3-State)
FEA TURES
•5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
•Supply voltage range of 1.2V to 3.6V
•Complies with JEDEC standard no. 8-1A
•CMOS low power consumption
•Direct interface with TTL levels
•High impedance when V
QUICK REFERENCE DATA
GND = 0 V; T
SYMBOL
t
PHL/tPLH
C
I
C
PD
NOTE:
is used to determine the dynamic power dissipation (PD in W):
1. C
PD
= CPD x V
P
D
= input frequency in MHz; CL = output load capacity in pF;
f
i
f
= output frequency in MHz; VCC = supply voltage in V;
o
(C
L
2. The condition is V
= 25°C; tr = tf 2.5 ns
amb
2
x fi + (CL x V
CC
2
x V
x fo) = sum of outputs.
CC
= 0V
CC
PARAMETER CONDITIONS TYPICAL UNIT
Propagation delay
1An to 1Y
2An to 2Y
Input capacitance 5.0 pF
Power dissipation capacitance per
buffer
= GND to V
I
n;
n
CC
CC
2
x fo) where:
CL = 50pF
VCC = 3.3V 3.5
Notes 1 and 2 20 pF
74L VC240A
DESCRIPTION
The 74LVC240A is a high-performance, low-power, low-voltage,
Si-gate CMOS device, superior to most advanced CMOS
compatible TTL families.
Inputs can be driven from either 3.3V or 5V devices. In 3-State
operation, outputs can handle 5V. These features allow the use of
these devices as translators in a mixed 3.3V/5V environment.
The ‘240A is an octal non-inverting buffer/line driver with 3-State
outputs. The 3-State outputs are controlled by the output enable
inputs 1OE
assume a high impedance OFF-state. Schmitt-trigger action at all
inputs makes the circuit highly tolerant for slower input rise and fall
times.
The ’240’ is functionally identical to the ’244’, but the ’244’ has
inverting outputs.
and 2OE. A HIGH on nOE causes the outputs to
ns
ORDERING INFORMATION
PACKAGES
20-Pin Plastic Small Outline (SO) –40°C to +85°C 74LVC240A D 74LVC240A D SOT163-1
20-Pin Plastic Shrink Small Outline (SSOP) Type II –40°C to +85°C 74LVC240A DB 74LVC240A DB SOT339-1
20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I –40°C to +85°C 74LVC240A PW 7LVC240APW DH SOT360-1
TEMPERATURE
RANGE
OUTSIDE
NORTH AMERICA
NORTH AMERICA PKG. DWG. #
1998 May 20 853-1981 19419
2
Philips Semiconductors Product specification
Octal buffer/line driver with 5-volt
tolerant inputs/outputs; inverting (3-State)
PIN DESCRIPTION
PIN NUMBER SYMBOL FUNCTION
1 1OE Output enable input (active LOW)
2, 4, 6, 8 1A0 to 1A3Data inputs
3, 5, 7, 9 2Y0 to 2Y3Bus outputs
10 GND Ground (0V)
17, 15, 13, 11 2A0 to 2A3Bus inputs
18, 16, 14, 12 1Y0 to 1Y3Bus outputs
19 2OE Output enable input (active-LOW)
20 V
CC
PIN CONFIGURATION
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3 1Y3
GND
Positive power supply
1
2
3
4
5
6
7
8
9
10 11
SV00212
20
V
CC
2OE
19
1Y0
18
2A0
17
1Y1
16
2A1
15
1Y2
14
2A2
13
12
2A3
FUNCTION TABLE
INPUTS OUTPUT
nOE nA
n
L L H
L H L
H X Z
H = HIGH voltage level
L = LOW voltage level
X = Don’t care
Z = High impedance OFF-state
LOGIC SYMBOL
1A
2
0
2A
17
0
1A
4
1
2A
15
1
1A
6
2
2A
13
2
1A
8
3
2A
11
3
1
1OE
19
2OE
FUNCTIONAL DIAGRAM
1A
2
0
1A
4
1
74LVC240A
nY
n
1Y
18
0
2Y
3
0
1Y
16
1
2Y
5
1
1Y
14
2
2Y
7
2
1Y
12
3
2Y
9
3
SV00608
1Y
18
0
1Y
16
1
LOGIC SYMBOL (IEEE/IEC)
1
EN
2
4
6
8
19
EN
11
13
15
17
1998 May 20
SV00611
1A
6
2
1A
8
3
1OE
1
2A
17
18
16
14
12
9
7
5
3
0
2A
15
1
2A
13
2
2A
11
3
19
2OE
1Y
2
1Y
3
2Y
0
2Y
1
2Y
2
2Y
3
SV00610
14
12
3
5
7
9
3
Philips Semiconductors Product specification
SYMBOL
PARAMETER
CONDITIONS
UNIT
O
O
V
V
mW
Octal buffer/line driver with 5-volt
74LVC240A
tolerant inputs/outputs; inverting (3-State)
RECOMMENDED OPERATING CONDITIONS
LIMITS
MIN MAX
V
CC
V
CC
V
V
T
amb
tr, t
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
SYMBOL
V
CC
I
IK
V
I
I
OK
O
I
O
I
, I
GND
T
stg
P
TOT
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
DC supply voltage (for max. speed performance) 2.7 3.6 V
DC supply voltage (for low-voltage applications) 1.2 3.6 V
DC Input voltage range 0 5.5 V
I
DC Output voltage range; output HIGH or LOW
state
0 V
CC
DC output voltage range; output 3-State 0 5.5
Operating ambient temperature range in free-air –40 +85 °C
Input rise and fall times
f
VCC = 1.2 to 2.7V
VCC = 2.7 to 3.6V
0
0
20
10
1
PARAMETER CONDITIONS RATING UNIT
DC supply voltage –0.5 to +6.5 V
DC input diode current VI t0 –50 mA
DC input voltage Note 2 –0.5 to +6.5 V
DC output diode current V
uVCC or VO t 0 "50 mA
O
DC output voltage; output HIGH or LOW state Note 2 –0.5 to VCC +0.5
DC output voltage; output 3-State Note 2 –0.5 to 6.5
DC output source or sink current VO = 0 to V
DC VCC or GND current "100 mA
CC
CC
"50 mA
Storage temperature range –65 to +150 °C
Power dissipation per package
– plastic mini-pack (SO) above +70°C derate linearly with 8 mW/K 500
– plastic shrink mini-pack (SSOP and TSSOP) above +60°C derate linearly with 5.5 mW/K 500
V
ns/V
1998 May 20
4
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