ON MC74VHC244DWR2 Octal bus buffer Datasheet

MC74VHC244
Octal Bus Buffer
The MC74VHC244 is an advanced high speed CMOS octal bus
buffer fabricated with silicon gate CMOS technology.
The MC74VHC244 is a noninverting 3--state buffer, and has two
active--low output enables. This device is designed to be used with
3--state memory address drivers, etc.
The internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output. The
inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems
to 3 V systems.
• High Speed: tPD = 3.9 ns (Typ) at VCC = 5 V
• Low Power Dissipation: ICC = 4 mA (Max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 28% VCC
• Power Down Protection Provided on Inputs
• Balanced Propagation Delays
• Designed for 2 V to 5.5 V Operating Range
• Low Noise: VOLP = 0.9 V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300 mA
• ESD Performance: Human Body Model > 2000 V
Machine Model > 200 V
• Chip Complexity: 136 FETs
• Pb--Free Packages are Available*
A1
A2
A3
DATA
INPUTS
A4
B1
B2
B3
B4
OUTPUT
ENABLES
2
18
4
16
6
14
8
12
11
9
13
7
15
5
17
3
YA3
YA4
NONINVERTING
OUTPUTS
YB2
YB3
YB4
Figure 1. Logic Diagram
*For additional information on our Pb--Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
March, 2006 -- Rev. 7
20
VHC244
AWLYYWWG
20
1
1
SOIC--20 WB
DW SUFFIX
CASE 751D
20
VHC
244
ALYW
20
1
1
TSSOP--20
DT SUFFIX
CASE 948E
20
74VHC244
AWLYWW
20
1
A
WL, L
YY, Y
WW, W
YA2
1
OEA
19
OEB
© Semiconductor Components Industries, LLC, 2006
MARKING DIAGRAM
1
SOIC EIAJ--20
M SUFFIX
CASE 967
YA1
YB1
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1
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN ASSIGNMENT
OEA
1
20
VCC
A1
2
19
OEB
YB4
3
18
YA1
A2
4
17
B4
YB3
5
16
YA2
A3
6
15
B3
YB2
7
14
YA3
A4
8
13
B2
YB1
9
12
YA4
GND
10
11
B1
ORDERING INFORMATION
See detailed ordering and shipping information in the
Ordering Information Table on page 2 of this data sheet.
Publication Order Number:
MC74VHC244/D
MC74VHC244
FUNCTION TABLE
INPUTS
OUTPUTS
OEA, OEB
A, B
YA, YB
L
L
L
L
H
H
H
X
Z
ORDERING INFORMATION
Device
Shipping†
Package
MC74VHC244DW -- OBSOLETE*
SOIC--20 WB
38 Units/Rail
MC74VHC244DWR2
SOIC--20 WB
1000/Tape & Reel
MC74VHC244DT
TSSOP--20
(Pb--Free)
75 Units/Rail
MC74VHC244DTR2
TSSOP--20
(Pb--Free)
2500/Tape & Reel
MC74VHC244M -- OBSOLETE*
SOIC EIAJ--20
(Pb--Free)
1600 Units/Box
MC74VHC244MEL
SOIC EIAJ--20
(Pb--Free)
2000/Tape & Reel
*This device is obsolete, information available for reference.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MAXIMUM RATINGS (Note 1)
Symbol
Parameter
Value
Unit
VCC
Positive DC Supply Voltage
--0.5 to +7.0
V
VIN
Digital Input Voltage
--0.5 to +7.0
V
VOUT
DC Output Voltage
--0.5 to VCC +0.5
V
IIK
Input Diode Current
--20
mA
IOK
Output Diode Current
±20
mA
IOUT
DC Output Current, per Pin
±25
mA
ICC
DC Supply Current, VCC and GND Pins
±75
mA
PD
Power Dissipation in Still Air
500
450
mW
TSTG
Storage Temperature Range
VESD
ESD Withstand Voltage
ILATCHUP
Latchup Performance
θJA
Thermal Resistance, Junction--to--Ambient
SOIC
TSSOP
--65 to +150
°C
Human Body Model (Note 2)
Machine Model (Note 3)
Charged Device Model (Note 4)
>2000
>200
>2000
V
Above VCC and Below GND at 125°C (Note 5)
±300
mA
96
128
°C/W
SOIC
TSSOP
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Vin and Vout should be constrained to the range GND ≤ (Vin or Vout) ≤ VCC. Unused inputs must always be tied to an appropriate logic voltage
level (e.g., either GND or VCC). Unused outputs must be left open.
2. Tested to EIA/JESD22--A114--A
3. Tested to EIA/JESD22--A115--A
4. Tested to JESD22--C101--A
5. Tested to EIA/JESD78
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MC74VHC244
RECOMMENDED OPERATING CONDITIONS
Symbol
Characteristics
Min
Max
Unit
2.0
5.5
V
DC Input Voltage
0
5.5
V
VOUT
DC Output Voltage
0
VCC
V
TA
Operating Temperature Range, all Package Types
--55
125
°C
tr, tf
Input Rise or Fall Time
0
100
20
ns/V
VCC
DC Supply Voltage
VIN
VCC = 3.3 V + 0.3 V
VCC = 5.0 V + 0.5 V
90
419,300
47.9
100
178,700
20.4
110
79,600
9.4
120
37,000
4.2
130
17,800
2.0
140
8,900
1.0
TJ = 80 ° C
117.8
TJ = 90 ° C
1,032,200
TJ = 100 ° C
80
FAILURE RATE OF PLASTIC = CERAMIC
UNTIL INTERMETALLICS OCCUR
TJ = 110° C
Time, Years
TJ = 120° C
Time, Hours
TJ = 130 ° C
Junction
Temperature °C
NORMALIZED FAILURE RATE
DEVICE JUNCTION TEMPERATURE VERSUS
TIME TO 0.1% BOND FAILURES
1
1
10
100
1000
TIME, YEARS
Figure 2. Failure Rate vs. Time Junction Temperature
DC CHARACTERISTICS (Voltages Referenced to GND)
VCC
Symbol
VIH
VIL
VOH
Parameter
Condition
Minimum High--Level
Input Voltage
Maximum Low--Level
Input Voltage
Maximum High--Level
Output Voltage
VIN = VIH or VIL
IOH = --50 mA
VIN = VIH or VIL
IOH = --4 mA
IOH = --8 mA
VOL
Maximum Low--Level
Output Voltage
VIN = VIH or VIL
IOL = 50 mA
VIN = VIH or VIL
IOH = 4 mA
IOH = 8 mA
(V)
TA = 25°C
Min
Typ
TA ≤ 85°C
Max
Min
Max
--55°C ≤ TA ≤ 125°C
Min
2.0
1.5
1.5
1.5
1.5
3.0 to
5.5
VCCX
0.7
VCCX
0.7
VCCX
0.7
VCCX
0.7
Max
V
2.0
0.5
0.5
0.5
3.0 to
5.5
VCCX
0.3
VCCX
0.3
VCCX
0.3
2.0
3.0
4.5
1.9
2.9
4.4
3.0
4.5
2.58
3.94
2.0
3.0
4.5
2.0
3.0
4.5
0.0
0.0
0.0
1.9
2.9
4.4
1.9
2.9
4.4
2.48
3.8
2.34
3.66
Unit
V
V
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
3.0
4.5
0.36
0.36
0.44
0.44
0.52
0.52
V
IIN
Input Leakage Current
VIN = 5.5 V or GND
0 to
5.5
±0.1
±1.0
±1.0
mA
IOZ
Maximum 3--State
Leakage Current
VIN = VIH or VIL
5.5
±0.25
±2.5
±2.5
mA
Maximum Quiescent
Supply Current
(per package)
VIN = VCC or GND
5.5
4.0
40.0
40.0
mA
ICC
VOUT = VCC or GND
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3
MC74VHC244
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0 ns)
TA = 25°C
Symbol
tPLH,
tPHL
tPZL,
tPZH
tPLZ,
tPHZ
tOSLH,
tOSHL
Parameter
Min
Test Conditions
--55°C ≤ TA
≤ 125°C
TA ≤ 85°C
Typ
Max
Min
Max
Min
Max
Unit
ns
Maximum Propagation
Delay, A to YA or
B to YB
VCC = 3.3 ± 0.3 V
CL = 15 pF
CL = 50 pF
5.8
8.3
8.4
11.9
1.0
1.0
10.0
13.5
1.0
1.0
11.0
14.5
VCC = 5.0 ± 0.5 V
CL = 15 pF
CL = 50 pF
3.9
5.4
5.5
7.5
1.0
1.0
6.5
8.5
1.0
1.0
7.5
9.5
Output Enable Time
OEA to YA or
OEB to YB
VCC = 3.3 ± 0.3 V
RL = 1 kΩ
CL = 15 pF
CL = 50 pF
6.6
9.1
10.6
14.1
1.0
1.0
12.5
16.0
1.0
1.0
13.5
17.0
VCC = 5.0 ± 0.5 V
RL = 1 kΩ
CL = 15 pF
CL = 50 pF
4.7
6.2
7.3
9.3
1.0
1.0
8.5
10.5
1.0
1.0
9.5
11.5
Output Disable Time
OEA to YA or
OEB to YB
VCC = 3.3 ± 0.3 V
RL = 1 kΩ
CL = 50 pF
10.3
14.0
1.0
16.0
1.0
17.0
VCC = 5.0 ± 0.5 V
RL = 1 kΩ
CL = 50 pF
6.7
9.2
1.0
10.5
1.0
11.5
Output to Output Skew
VCC = 3.3 ± 0.3 V
(Note 6)
CL = 50 pF
1.5
1.5
1.5
VCC = 5.0 ± 0.5 V
(Note 6)
CL = 50 pF
1.0
1.0
1.5
10
10
10
Cin
Maximum Input
Capacitance
4
Cout
Maximum Three--State
Output Capacitance
(Output in High--Impedance
State)
6
ns
ns
ns
pF
pF
Typical @ 25°C, VCC = 5.0V
CPD
19
Power Dissipation Capacitance (Note 7)
pF
6. Parameter guaranteed by design. tOSLH = |tPLHm -- tPLHn|, tOSHL = |tPHLm -- tPHLn|.
7. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation: ICC(OPR) = CPD ¯ VCC ¯ fin + ICC/8 (per bit). CPD is used to determine the no--load
dynamic power consumption; PD = CPD ¯ VCC2 ¯ fin + ICC ¯ VCC.
NOISE CHARACTERISTICS (Input tr = tf = 3.0 ns, CL = 50 pF, VCC = 5.0 V)
TA = 25°C
Typ
Parameter
Symbol
Max
Unit
VOLP
Quiet Output Maximum Dynamic VOL
0.6
0.9
V
VOLV
Quiet Output Minimum Dynamic VOL
--0.6
--0.9
V
VIHD
Minimum High Level Dynamic Input Voltage
3.5
V
VILD
Maximum Low Level Dynamic Input Voltage
1.5
V
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4
MC74VHC244
SWITCHING WAVEFORMS
VCC
A or B
50%
tPLH
YA or YB
tPHL
OEA or OEB
VCC
50%
GND
tPZL
tPZH
YA or YB
Figure 3. Switching Waveform
HIGH
IMPEDANCE
50% VCC
YA or YB
50% VCC
GND
tPLZ
VOL +0.3V
tPHZ
VOH --0.3V
50% VCC
HIGH
IMPEDANCE
Figure 4. Switching Waveform
TEST CIRCUITS
TEST POINT
TEST POINT
OUTPUT
DEVICE
UNDER
TEST
OUTPUT
DEVICE
UNDER
TEST
CL*
1 kΩ
CL*
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
*Includes all probe and jig capacitance
*Includes all probe and jig capacitance
Figure 5. Test Circuit
Figure 6. Test Circuit
INPUT
Figure 7. Input Equivalent Circuit
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5
MC74VHC244
OUTLINE DIMENSIONS
SOIC--20 WB
DW SUFFIX
CASE 751D--05
ISSUE G
A
20
θ
X 45 _
E
h
H
M
10X
0.25
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.13 TOTAL IN EXCESS OF B
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
11
B
M
D
1
10
20X
B
B
0.25
M
T A
S
B
DIM
A
A1
B
C
D
E
e
H
h
L
θ
S
L
A
18X
e
SEATING
PLANE
A1
C
T
MILLIMETERS
MIN
MAX
2.35
2.65
0.10
0.25
0.35
0.49
0.23
0.32
12.65
12.95
7.40
7.60
1.27 BSC
10.05
10.55
0.25
0.75
0.50
0.90
0_
7_
TSSOP--20
DT SUFFIX
CASE 948E--02
ISSUE B
20X
0.15 (0.006) T U
2X
L
K REF
0.10 (0.004)
S
L/2
20
M
T U
S
V
S
K
K1
11
J J1
B
--U--
PIN 1
IDENT
SECTION N--N
1
10
0.25 (0.010)
N
0.15 (0.006) T U
S
M
A
--V-N
NOTES:
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION:
MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE
MOLD FLASH, PROTRUSIONS OR GATE
BURRS. MOLD FLASH OR GATE BURRS
SHALL NOT EXCEED 0.15 (0.006) PER
SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION
SHALL NOT EXCEED 0.25 (0.010) PER
SIDE.
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE --W--.
F
DETAIL E
--W--
C
D
G
H
DETAIL E
0.100 (0.004)
--T-- SEATING
PLANE
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6
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
6.40
6.60
4.30
4.50
-----1.20
0.05
0.15
0.50
0.75
0.65 BSC
0.27
0.37
0.09
0.20
0.09
0.16
0.19
0.30
0.19
0.25
6.40 BSC
0_
8_
INCHES
MIN
MAX
0.252
0.260
0.169
0.177
-----0.047
0.002
0.006
0.020
0.030
0.026 BSC
0.011
0.015
0.004
0.008
0.004
0.006
0.007
0.012
0.007
0.010
0.252 BSC
0_
8_
MC74VHC244
OUTLINE DIMENSIONS
SOIC EIAJ--20
M SUFFIX
CASE 967--01
ISSUE O
20
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED
AT THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
LE
11
Q1
E HE
1
M_
L
10
DETAIL P
Z
D
e
VIEW P
A
A1
b
0.13 (0.005)
c
M
0.10 (0.004)
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7
DIM
A
A1
b
c
D
E
e
HE
L
LE
M
Q1
Z
MILLIMETERS
MIN
MAX
-----2.05
0.05
0.20
0.35
0.50
0.18
0.27
12.35
12.80
5.10
5.45
1.27 BSC
7.40
8.20
0.50
0.85
1.10
1.50
10 _
0_
0.70
0.90
-----0.81
INCHES
MIN
MAX
-----0.081
0.002
0.008
0.014
0.020
0.007
0.011
0.486
0.504
0.201
0.215
0.050 BSC
0.291
0.323
0.020
0.033
0.043
0.059
10 _
0_
0.028
0.035
-----0.032
MC74VHC244
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
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For additional information, please contact your
local Sales Representative.
MC74VHC244/D
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