74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1. — 7 August 2012 6 of 17
NXP Semiconductors
74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
V
OL
LOW-level
output voltage
V
I
=V
IH
or V
IL
I
O
=20A; V
CC
= 2.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 4.5 V - 0 0.1 - 0.1 - 0.1 V
I
O
=20A; V
CC
= 6.0 V - 0 0.1 - 0.1 - 0.1 V
I
O
=6.0mA; V
CC
= 4.5 V - 0.15 0.26 - 0.33 - 0.4 V
I
O
=7.8mA; V
CC
= 6.0 V - 0.16 0.26 - 0.33 - 0.4 V
I
I
input leakage
current
V
I
=V
CC
or GND;
V
CC
=6.0V
--0.1 - 1.0 - 1.0 A
I
OZ
OFF-state
output current
per input pin; V
I
=V
IH
or V
IL
;
V
O
=V
CC
or GND;
other inputs at V
CC
or GND;
V
CC
=6.0V; I
O
=0A
--0.5 - 5.0 - 10 A
I
CC
supply current V
I
=V
CC
or GND; I
O
=0A;
V
CC
=6.0V
- - 8.0 - 80 - 160 A
C
I
input
capacitance
-3.5 - - - - - pF
74HCT244-Q100
V
IH
HIGH-level
input voltage
V
CC
= 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V
V
IL
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V
V
OH
HIGH-level
output voltage
V
I
=V
IH
or V
IL
; V
CC
=4.5V
I
O
= 20 A 4.4 4.5 - 4.4 - 4.4 - V
I
O
= 6 mA 3.98 4.32 - 3.84 - 3.7 - V
V
OL
LOW-level
output voltage
V
I
=V
IH
or V
IL
; V
CC
=4.5V
I
O
=20A - 0 0.1 - 0.1 - 0.1 V
I
O
= 6.0 mA - 0.16 0.26 - 0.33 - 0.4 V
I
I
input leakage
current
V
I
=V
CC
or GND;
V
CC
=5.5V
--0.1 - 1.0 - 1.0 A
I
OZ
OFF-state
output current
per input pin; V
I
=V
IH
or V
IL
;
V
O
=V
CC
or GND;
other inputs at V
CC
or GND;
V
CC
=5.5V; I
O
=0A
--0.5 - 5.0 - 10 A
I
CC
supply current V
I
=V
CC
or GND;
V
CC
=5.5V; I
O
=0A
- - 8.0 - 80 - 160 A
I
CC
additional
supply current
per input pin;
V
I
=V
CC
2.1 V;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V;
I
O
=0A
- 70 252 - 315 - 343 A
C
I
input
capacitance
-3.5 - - - - - pF
Table 6. Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1. — 7 August 2012 7 of 17
NXP Semiconductors
74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; for load circuit see Figure 8.
Symbol Parameter Conditions 25 C 40 C to +125 C Unit
Min Typ Max Max
(85 C)
Max
(125 C)
74HC244-Q100
t
pd
propagation delay nAn to nYn;
see Figure 6
[1]
V
CC
= 2.0 V - 30 110 145 165 ns
V
CC
= 4.5 V - 11 22 28 33 ns
V
CC
= 5.0 V; C
L
=15pF - 9 - - - ns
V
CC
= 6.0 V - 9 19 24 28 ns
t
en
enable time nOE to nYn; see Figure 7
[2]
V
CC
= 2.0 V - 36 150 190 225 ns
V
CC
= 4.5 V - 13 30 38 45 ns
V
CC
= 6.0 V - 10 26 33 38 ns
t
dis
disable time nOE to nYn or see Figure 7
[3]
V
CC
= 2.0 V - 39 150 190 225 ns
V
CC
= 4.5 V - 14 30 38 45 ns
V
CC
= 6.0 V - 11 26 33 38 ns
t
t
transition time see Figure 6
[4]
V
CC
= 2.0 V - 14 60 75 90 ns
V
CC
= 4.5 V - 5 12 15 18 ns
V
CC
= 6.0 V - 4 10 13 15 ns
C
PD
power dissipation
capacitance
per buffer; V
I
=GNDtoV
CC
[5]
-35- - -pF
74HC_HCT244_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1. — 7 August 2012 8 of 17
NXP Semiconductors
74HC244-Q100; 74HCT244-Q100
Octal buffer/line driver; 3-state
[1] t
pd
is the same as t
PHL
and t
PLH
.
[2] t
en
is the same as t
PZH
and t
PZL
.
[3] t
dis
is the same as t
PHZ
and t
PLZ
.
[4] t
t
is the same as t
THL
and t
TLH
.
[5] C
PD
is used to determine the dynamic power dissipation (P
D
in W):
P
D
=C
PD
V
CC
2
f
i
N+ (C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of outputs.
11. Waveforms
74HCT244-Q100
t
pd
propagation delay nAn to nYn;
see Figure 6
[1]
V
CC
= 4.5 V - 13 22 28 33 ns
V
CC
= 5.0 V; C
L
=15pF - 11 - - - ns
t
en
enable time nOE to nYn; V
CC
= 4.5 V; see
Figure 7
[2]
-153038 45ns
t
dis
disable time nOE to nYn; V
CC
= 4.5 V; see
Figure 7
[3]
-152531 38ns
t
t
transition time V
CC
= 4.5 V; see Figure 6
[4]
- 5 12 15 18 ns
C
PD
power dissipation
capacitance
per buffer;
V
I
=GNDtoV
CC
1.5 V
[5]
-35- - -pF
Table 7. Dynamic characteristics
…continued
GND = 0 V; for load circuit see Figure 8.
Symbol Parameter Conditions 25 C 40 C to +125 C Unit
Min Typ Max Max
(85 C)
Max
(125 C)
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 6. Input (nAn) to output (nYn) propagation delays and output transition times
001aae013
t
PLH
t
PHL
V
M
V
M
V
M
V
M
nYn output
nAn input
V
I
GND
V
OH
V
OL
t
TLH
t
THL
90 %
10 %

74HCT244PW-Q100,11

Mfr. #:
Manufacturer:
Nexperia
Description:
Buffers & Line Drivers 74HCT244PW-Q100/TSSOP20/REEL 1
Lifecycle:
New from this manufacturer.
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