74HC244PW [NEXPERIA]
Octal buffer/line driver; 3-stateProduction;型号: | 74HC244PW |
厂家: | Nexperia |
描述: | Octal buffer/line driver; 3-stateProduction |
文件: | 总15页 (文件大小:257K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Rev. 7 — 27 July 2021
Product data sheet
1. General description
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be
used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and
2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume
a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting
resistors to interface inputs to voltages in excess of VCC
.
2. Features and benefits
•
Wide supply voltage range from 2.0 to 6.0 V
•
•
•
•
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Input levels:
•
•
For 74HC244: CMOS level
For 74HCT244: TTL level
•
•
•
Octal bus interface
Non-inverting 3-state outputs
Complies with JEDEC standards:
•
•
JESD8C (2.7 V to 3.6 V)
JESD7A (2.0 V to 6.0 V)
•
ESD protection:
•
•
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
•
•
Multiple package options
Specified from -40 °C to +85 °C and -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range Name
Description
Version
74HC244D
-40 °C to +125 °C
-40 °C to +125 °C
-40 °C to +125 °C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HCT244D
74HC244PW
74HCT244PW
74HC244BQ
74HCT244BQ
TSSOP20
plastic thin shrink small outline package;
20 leads; body width 4.4 mm
SOT360-1
SOT764-1
DHVQFN20 plastic dual in-line compatible thermal
enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 × 4.5 × 0.85 mm
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
4. Functional diagram
1Y0
1Y1
1Y2
1Y3
1A0
1A1
1A2
2
4
6
18
16
14
12
1A3
8
1
1OE
2Y0
2Y1
2Y2
2Y3
2A0
2A1
2A2
17
15
3
5
7
9
13
2A3
11
19
2OE
mna875
Fig. 1. Functional diagram
1
2
EN
18
16
14
12
4
6
8
2
4
6
17
15
13
18
16
14
12
3
1A0
1A1
1A2
2A0
2A1
2A2
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
5
7
9
19
11
EN
9
7
5
3
13
15
17
8
1
11
19
1A3
2A3
1OE
2OE
mna874
mna873
Fig. 2. Logic symbol
Fig. 3. IEC logic symbol
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
2 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
5. Pinning information
5.1. Pinning
74HC244
74HCT244
terminal 1
index area
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1A0
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
74HC244
74HCT244
1
2
20
19
18
17
16
15
14
13
12
11
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND
V
CC
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
2A3
3
(1)
GND
4
5
6
001aae012
7
8
Transparent top view
9
(1) This is not a ground pin. There is no electrical or
mechanical requirement to solder the pad. In case
soldered, the solder land should remain floating or
connected to GND.
10
001aae011
Fig. 4. Pin configuration SOT163-1 (SO20)
and SOT360-1 (TSSOP20)
Fig. 5. Pin configuration SOT764-1 (DHVQFN20)
5.2. Pin description
Table 2. Pin description
Symbol
Pin
Description
1OE, 2OE
1, 19
output enable input (active LOW)
data input
1A0, 1A1, 1A2, 1A3
2Y0, 2Y1, 2Y2, 2Y3
GND
2, 4, 6, 8
3, 5, 7, 9
10
bus output
ground (0 V)
2A0, 2A1, 2A2, 2A3
1Y0, 1Y1, 1Y2, 1Y3
VCC
17, 15, 13, 11
18, 16, 14, 12
20
data input
bus output
supply voltage
6. Functional description
Table 3. Function table
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
Input
nOE
L
Output
nAn
L
nYn
L
L
H
H
H
X
Z
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
3 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Max
+7
Unit
V
VCC
IIK
supply voltage
-0.5
input clamping current
output clamping current
output current
VI < -0.5 V or VI > VCC + 0.5 V
VO < -0.5 V or VO > VCC + 0.5 V
-0.5 V < VO < VCC + 0.5 V
-
±20
±20
±35
70
mA
mA
mA
mA
mA
°C
IOK
IO
-
-
ICC
IGND
Tstg
Ptot
supply current
-
ground current
-70
-65
-
-
storage temperature
total power dissipation
+150
500
[1]
mW
[1] For SOT163-1 (SO20) package: Ptot derates linearly with 12.3 mW/K above 109 °C.
For SOT360-1 (TSSOP20) package: Ptot derates linearly with 10.0 mW/K above 100 °C.
For SOT764-1 (DHVQFN20) package: Ptot derates linearly with 12.9 mW/K above 111 °C.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Symbol Parameter
74HC244
Conditions
Min
Typ
Max
Unit
VCC
VI
supply voltage
2.0
5.0
6.0
VCC
VCC
625
139
83
V
input voltage
0
0
-
V
VO
output voltage
-
V
Δt/ΔV
input transition rise and fall rate
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
-
-
ns/V
ns/V
ns/V
°C
-
1.67
-
-
-
Tamb
ambient temperature
-40
+125
74HCT244
VCC
VI
supply voltage
4.5
0
5.0
5.5
VCC
VCC
139
V
input voltage
-
V
VO
output voltage
0
-
1.67
-
V
Δt/ΔV
Tamb
input transition rise and fall rate
ambient temperature
VCC = 4.5 V
-
ns/V
°C
-40
+125
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
4 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
9. Static characteristics
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 °C
Typ
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
Min
Max
74HC244
VIH
HIGH-level
input voltage
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
VI = VIH or VIL
1.5
1.2
2.4
3.2
0.8
2.1
2.8
-
-
1.5
-
-
1.5
-
-
V
V
V
V
V
V
3.15
3.15
3.15
4.2
-
4.2
-
4.2
-
VIL
LOW-level
input voltage
-
-
-
0.5
1.35
1.8
-
-
-
0.5
1.35
1.8
-
-
-
0.5
1.35
1.8
VOH
HIGH-level
output
voltage
IO = -20 μA; VCC = 2.0 V
1.9
4.4
2.0
4.5
-
-
-
-
-
1.9
4.4
-
-
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
IO = -20 μA; VCC = 4.5 V
IO = -20 μA; VCC = 6.0 V
IO = -6.0 mA; VCC = 4.5 V
IO = -7.8 mA; VCC = 6.0 V
5.9
6.0
5.9
3.98
5.48
4.32
5.81
3.84
5.34
VOL
LOW-level
output
VI = VIH or VIL
IO = 20 μA; VCC = 2.0 V
IO = 20 μA; VCC = 4.5 V
IO = 20 μA; VCC = 6.0 V
IO = 6.0 mA; VCC = 4.5 V
IO = 7.8 mA; VCC = 6.0 V
-
-
-
-
-
-
0
0
0.1
0.1
-
-
-
-
-
-
0.1
0.1
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
V
V
V
V
V
voltage
0
0.1
0.1
0.15
0.16
-
0.26
0.26
±0.1
0.33
0.33
±1.0
II
input leakage VI = VCC or GND; VCC = 6.0 V
current
±1.0 μA
IOZ
OFF-state
output
VI = VIH or VIL; VCC = 6.0 V;
VO = VCC or GND
-
-
±0.5
-
±5.0
-
±10
μA
current
ICC
CI
supply
current
VI = VCC or GND; IO = 0 A;
VCC = 6.0 V
-
-
-
8.0
-
-
-
80
-
-
-
160
-
μA
pF
input
3.5
capacitance
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
5 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Symbol Parameter
74HCT244
Conditions
25 °C
Typ
-40 °C to +85 °C -40 °C to +125 °C Unit
Min
Max
Min
Max
Min
Max
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.0
-
1.6
1.2
-
2.0
-
-
2.0
-
-
V
V
VIL
LOW-level
0.8
0.8
0.8
input voltage
VOH
HIGH-level
output
voltage
VI = VIH or VIL; VCC = 4.5 V
IO = -20 μA
4.4
4.5
-
-
4.4
-
-
4.4
3.7
-
-
V
V
IO = -6 mA
3.98
4.32
3.84
VOL
LOW-level
output
voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 20 μA
-
-
-
0
0.16
-
0.1
-
-
-
0.1
-
-
-
0.1
0.4
V
V
IO = 6.0 mA
0.26
±0.1
0.33
±1.0
II
input leakage VI = VCC or GND; VCC = 5.5 V
current
±1.0 μA
IOZ
OFF-state
output
VI = VIH or VIL; VCC = 5.5 V;
VO = VCC or GND
-
-
±0.5
-
±5.0
-
±10
μA
current
ICC
supply
current
VI = VCC or GND; VCC = 5.5 V;
IO = 0 A
-
-
-
8.0
-
-
80
-
-
160
343
μA
μA
ΔICC
additional
supply
current
per input pin; VI = VCC - 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V; IO = 0 A
70
252
315
CI
input
-
3.5
-
-
-
-
-
pF
capacitance
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
6 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; for test circuit see Fig. 8.
Symbol Parameter
Conditions
25 °C
-40 °C to +85 °C -40 °C to +125 °C Unit
Min Typ Max
Min
Max
Min
Max
74HC244
tpd
propagation nAn to nYn; see Fig. 6
[1]
delay
VCC = 2.0 V
-
-
-
-
30
11
9
110
22
-
-
-
-
-
145
28
-
-
-
-
-
165
33
-
ns
ns
ns
ns
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
VCC = 6.0 V
9
19
24
28
ten
tdis
tt
enable time nOE to nYn; see Fig. 7
VCC = 2.0 V
[2]
[3]
[4]
-
-
-
36
13
10
150
30
-
-
-
190
38
-
-
-
225
45
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
26
33
38
disable time nOE to nYn; see Fig. 7
VCC = 2.0 V
-
-
-
39
14
11
150
30
-
-
-
190
38
-
-
-
225
45
ns
ns
ns
VCC = 4.5 V
VCC = 6.0 V
26
33
38
transition
time
see Fig. 6
VCC = 2.0 V
-
-
-
-
14
5
60
12
10
-
-
-
-
-
75
15
13
-
-
-
-
-
90
18
15
-
ns
ns
ns
pF
VCC = 4.5 V
VCC = 6.0 V
4
CPD
power
per buffer; VI = GND to VCC [5]
35
dissipation
capacitance
74HCT244
tpd
propagation nAn to nYn; see Fig. 6
[1]
delay
VCC = 4.5 V
-
-
-
13
11
15
22
-
-
-
-
28
-
-
-
-
33
-
ns
ns
ns
VCC = 5.0 V; CL = 15 pF
ten
tdis
tt
enable time nOE to nYn; VCC = 4.5 V; [2]
see Fig. 7
30
38
45
disable time nOE to nYn; VCC = 4.5 V; [3]
see Fig. 7
-
-
-
15
5
25
12
-
-
-
-
31
15
-
-
-
-
38
18
-
ns
ns
pF
transition
time
VCC = 4.5 V; see Fig. 6
[4]
CPD
power
per buffer;
[5]
35
dissipation
capacitance
VI = GND to VCC - 1.5 V
[1] tpd is the same as tPHL and tPLH
[2] ten is the same as tPZH and tPZL
[3] tdis is the same as tPHZ and tPLZ
[4] tt is the same as tTHL and tTLH
.
.
.
.
[5] CPD is used to determine the dynamic power dissipation (PD in μW): PD = CPD × VCC 2 × fi × N + Σ (CL × VCC 2 × fo) where:
fi = input frequency in MHz; fo = output frequency in MHz;
CL = output load capacitance in pF; VCC = supply voltage in V;
N = number of inputs switching; Σ (CL × VCC 2 × fo) = sum of outputs.
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
7 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
10.1. Waveforms and test circuit
V
I
V
V
M
nAn input
GND
M
t
t
PHL
PLH
V
OH
90 %
V
V
nYn output
M
M
10 %
V
OL
t
t
TLH
THL
001aae013
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig. 6. Input (nAn) to output (nYn) propagation delays and output transition times
V
I
nOE input
V
M
GND
t
t
PZL
PLZ
V
CC
nYn output
LOW-to-OFF
OFF-to-LOW
V
M
V
X
V
OL
t
t
PZH
PHZ
V
OH
V
Y
nYn output
HIGH-to-OFF
OFF-to-HIGH
V
M
GND
outputs
enabled
outputs
disabled
outputs
enabled
001aae014
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig. 7. 3-state enable and disable times
Table 8. Measurement points
Type
Input
VM
Output
VM
VX
VY
74HC244
0.5 × VCC
1.3 V
0.5 × VCC
1.3 V
0.1 × VCC
0.1 × VCC
0.9 × VCC
0.9 × VCC
74HCT244
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
8 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
t
W
V
I
90 %
negative
pulse
V
V
V
M
M
10 %
0 V
t
t
r
f
t
t
f
r
V
I
90 %
positive
pulse
V
M
M
10 %
0 V
t
W
V
V
CC
CC
V
I
V
O
R
L
S1
G
open
DUT
R
T
C
L
001aad983
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig. 8. Test circuit for measuring switching times
Table 9. Test data
Type
Input
VI
Load
CL
S1 position
tPHL, tPLH
open
tr, tf
6 ns
6 ns
RL
tPZH, tPHZ
GND
tPZL, tPLZ
VCC
74HC244
VCC
3 V
15 pF, 50 pF 1 kΩ
15 pF, 50 pF 1 kΩ
74HCT244
open
GND
VCC
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
9 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
11. Package outline
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
D
E
A
X
c
y
H
E
v
M
A
Z
20
11
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
10
w
detail X
e
M
b
p
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
max.
(1)
(1)
(1)
UNIT
mm
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.3
0.1
2.45
2.25
0.49
0.36
0.32
0.23
13.0
12.6
7.6
7.4
10.65
10.00
1.1
0.4
1.1
1.0
0.9
0.4
2.65
0.1
0.25
0.01
1.27
0.05
1.4
0.25 0.25
0.1
8o
0o
0.012 0.096
0.004 0.089
0.019 0.013 0.51
0.014 0.009 0.49
0.30
0.29
0.419
0.394
0.043 0.043
0.016 0.039
0.035
0.016
inches
0.055
0.01 0.01 0.004
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT163-1
075E04
MS-013
Fig. 9. Package outline SOT163-1 (SO20)
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
10 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
D
E
A
X
c
H
v
M
A
y
E
Z
11
20
Q
A
2
(A )
3
A
A
1
pin 1 index
θ
L
p
L
1
10
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(2)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.
8o
0o
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
6.6
6.4
4.5
4.3
6.6
6.2
0.75
0.50
0.4
0.3
0.5
0.2
mm
1.1
0.65
1
0.2
0.13
0.1
0.25
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT360-1
MO-153
Fig. 10. Package outline SOT360-1 (TSSOP20)
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
11 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
SOT764-1
B
A
D
A
A
1
E
c
detail X
terminal 1
index area
terminal 1
index area
e
C
1
v
w
C
C
A B
y
y
e
b
C
1
2
9
L
1
10
E
e
h
20
11
19
12
X
D
h
0
2.5
5 mm
scale
Dimensions (mm are the original dimensions)
(1) (1)
(1)
Unit
A
A
b
c
D
D
h
E
E
e
e
1
L
v
w
y
y
1
1
h
max 1.00 0.05 0.30
4.6 3.15 2.6 1.15
0.5
nom
min
mm
0.90 0.02 0.25 0.2 4.5 3.00 2.5 1.00 0.5 3.5 0.4 0.1 0.05 0.05 0.1
0.80 0.00 0.18 4.4 2.85 2.4 0.85 0.3
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
sot764-1_po
Issue date
References
Outline
version
European
projection
IEC
- - -
JEDEC
JEITA
- - -
03-01-27
14-12-12
SOT764-1
MO-241
Fig. 11. Package outline SOT764-1 (DHVQFN20)
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
12 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
12. Abbreviations
Table 10. Abbreviations
Acronym
CMOS
DUT
Description
Complementary Metal Oxide Semiconductor
Device Under Test
ESD
ElectroStatic Discharge
Human Body Model
HBM
MM
Machine Model
TTL
Transistor-Transistor Logic
13. Revision history
Table 11. Revision history
Document ID
Release date Data sheet status
20210727 Product data sheet
Change notice Supersedes
- 74HC_HCT244 v.6
74HC_HCT244 v.7
Modifications:
•
•
Type numbers 74HC244DB and 74HCT244DB (SOT339-1/SSOP20) removed.
Section 2 updated.
74HC_HCT244 v.6
Modifications:
20190927
Product data sheet
-
74HC_HCT244 v.5
•
The format of this data sheet has been redesigned to comply with the identity
guidelines of Nexperia.
•
•
Legal texts have been adapted to the new company name where appropriate.
Table 4: Derating values for Ptot total power dissipation have been updated.
74HC_HCT244 v.5
Modifications:
20160226
Type numbers 74HC244N and 74HCT244N (SOT146-1) removed.
20120924 Product data sheet 74HC_HCT244 v.3
Product data sheet
-
74HC_HCT244 v.4
•
74HC_HCT244 v.4
Modifications:
-
•
The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
•
Legal texts have been adapted to the new company name where appropriate.
74HC_HCT244 v.3
20051222
19901201
Product data sheet
Product specification
-
-
74HC_HCT244_CNV v.2
-
74HC_HCT244_CNV v.2
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
13 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
injury, death or severe property or environmental damage. Nexperia and its
suppliers accept no liability for inclusion and/or use of Nexperia products in
such equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
14. Legal information
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Data sheet status
Document status Product
Definition
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
without further testing or modification.
[1][2]
status [3]
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia product is suitable
and fit for the customer’s applications and products planned, as well as
for the planned application and use of customer’s third party customer(s).
Customers should provide appropriate design and operating safeguards to
minimize the risks associated with their applications and products.
Preliminary [short]
data sheet
Qualification
Production
This document contains data from
the preliminary specification.
Product [short]
data sheet
This document contains the product
specification.
[1] Please consult the most recently issued document before initiating or
completing a design.
Nexperia does not accept any liability related to any default, damage, costs
or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party
customer(s). Customer is responsible for doing all necessary testing for the
customer’s applications and products using Nexperia products in order to
avoid a default of the applications and the products or of the application or
use by customer’s third party customer(s). Nexperia does not accept any
liability in this respect.
[2] The term 'short data sheet' is explained in section "Definitions".
[3] The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
Definitions
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any representations or
warranties as to the accuracy or completeness of information included herein
and shall have no liability for the consequences of use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is
intended for quick reference only and should not be relied upon to contain
detailed and full information. For detailed and full information see the relevant
full data sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of commercial sale — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.com/profile/terms, unless otherwise agreed
in a valid written individual agreement. In case an individual agreement is
concluded only the terms and conditions of the respective agreement shall
apply. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Disclaimers
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia does not give any
representations or warranties, expressed or implied, as to the accuracy
or completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified, the
product is not suitable for automotive use. It is neither qualified nor tested in
accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of non-automotive qualified
products in automotive equipment or applications.
In no event shall Nexperia be liable for any indirect, incidental, punitive,
special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal
or replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards,
customer (a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s own risk,
and (c) customer fully indemnifies Nexperia for any liability, damages or failed
product claims resulting from customer design and use of the product for
automotive applications beyond Nexperia’s standard warranty and Nexperia’s
product specifications.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards customer
for the products described herein shall be limited in accordance with the
Terms and conditions of commercial sale of Nexperia.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
Right to make changes — Nexperia reserves the right to make changes
to information published in this document, including without limitation
specifications and product descriptions, at any time and without notice. This
document supersedes and replaces all information supplied prior to the
publication hereof.
Trademarks
Suitability for use — Nexperia products are not designed, authorized or
warranted to be suitable for use in life support, life-critical or safety-critical
systems or equipment, nor in applications where failure or malfunction
of an Nexperia product can reasonably be expected to result in personal
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
14 / 15
Nexperia
74HC244; 74HCT244
Octal buffer/line driver; 3-state
Contents
1. General description......................................................1
2. Features and benefits.................................................. 1
3. Ordering information....................................................1
4. Functional diagram.......................................................2
5. Pinning information......................................................3
5.1. Pinning.........................................................................3
5.2. Pin description.............................................................3
6. Functional description................................................. 3
7. Limiting values............................................................. 4
8. Recommended operating conditions..........................4
9. Static characteristics....................................................5
10. Dynamic characteristics............................................ 7
10.1. Waveforms and test circuit........................................ 8
11. Package outline........................................................ 10
12. Abbreviations............................................................13
13. Revision history........................................................13
14. Legal information......................................................14
© Nexperia B.V. 2021. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 27 July 2021
©
74HC_HCT244
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2021. All rights reserved
Product data sheet
Rev. 7 — 27 July 2021
15 / 15
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