74HC244D NXP Semiconductors, 74HC244D Datasheet - Page 11

• Manufacturer Part Number: 74HC244D
• Description: Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin SO Bulk
• Manufacturer: NXP Semiconductors

Specifications of 74HC244D

• Package: 20SO
• Logic Family: HC
• Logic Function: Buffer/Line Driver
• Number Of Outputs Per Chip: 8
• Output Type: 3-State
• Input Signal Type: Single-Ended
• Maximum Propagation Delay Time @ Maximum Cl: 110@2V|22@4.5V|19@6V ns
• Polarity: Non-Inverting

Philips Semiconductors
Table 9:
GND = 0 V; t
[1]
Table 10:
GND = 0 V; t
74HC_HCT244_3
Product data sheet
Symbol Parameter
T
t
t
t
t
t
t
t
t
Symbol Parameter
T
t
t
t
t
t
t
t
t
C
PHL
PLH
PZH
PZL
PHZ
PLZ
THL
TLH
PHL
PLH
PZH
PZL
PHZ
PLZ
THL
TLH
amb
amb
PD
,
,
,
,
,
,
C
P
f
f
C
V
N = number of inputs switching;
,
,
i
o
D
CC
= 40 C to +125 C
PD
= input frequency in MHz;
L
(C
= 25 C
= output frequency in MHz;
= output load capacitance in pF;
= C
L
is used to determine the dynamic power dissipation (P
= supply voltage in V;
propagation delay nAn to nYn see
3-state output enable time
nOE to nYn
3-state output disable time
nOE to nYn
output transition time
propagation delay nAn to nYn see
3-state output enable time
nOE to nYn
3-state output disable time
nOE to nYn
output transition time
power dissipation
capacitance
PD
V
Dynamic characteristics 74HC244
Dynamic characteristics type 74HCT244
CC
r
r
= t
= t
2
V
CC
f
f
= 6 ns; C
= 6 ns; C
f
o
2
) = sum of outputs.
f
i
N + (C
L
L
= 50 pF unless otherwise specified; for test circuit see
= 50 pF unless otherwise specified; for test circuit see
L
V
CC
2
f
Conditions
see
see
see
Conditions
V
V
V
V
o
) where:
CC
CC
CC
I
V
V
V
V
V
V
V
V
V
V
V
V
V
V
= GND to (V
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
Figure 6
Figure 7
Figure 7
Figure 6
Figure 6
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
Rev. 03 — 22 December 2005
…continued
= 2.0 V
= 4.5 V
= 6.0 V
= 2.0 V
= 4.5 V
= 6.0 V
= 2.0 V
= 4.5 V
= 6.0 V
= 2.0 V
= 4.5 V
= 6.0 V
= 4.5 V
= 5 V; C
D
L
CC
in W):
= 15 pF
Figure 7
Figure 7
Figure 6
1.5 V)
74HC244; 74HCT244
[1]
Min
-
-
-
-
-
-
-
-
-
-
-
-
Min
-
-
-
-
-
-
Figure
Figure
Octal buffer/line driver; 3-state
8.
8.
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Typ
-
-
-
-
-
-
-
-
-
-
-
-
Typ
13
11
15
15
5
35
Max
165
33
28
225
45
38
225
45
38
90
18
15
Max
22
-
30
25
12
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
pF
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