74HCT244D NXP Semiconductors, 74HCT244D Datasheet - Page 12

• Manufacturer Part Number: 74HCT244D
• Description: Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin SO Bulk
• Manufacturer: NXP Semiconductors

Specifications of 74HCT244D

• Package: 20SO
• Logic Family: HCT
• 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: 22@4.5V ns
• Polarity: Non-Inverting
• Logic Device Type: Buffer/Line Driver, Non Inverting
• Supply Voltage Range: 4.5V To 5.5V
• Logic Case Style: SOIC
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +125°C
• No. Of Circuits: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
Table 10:
GND = 0 V; t
[1]
12. Waveforms
74HC_HCT244_3
Product data sheet
Symbol Parameter
T
t
t
t
t
t
t
t
t
T
t
t
t
t
t
t
t
t
PHL
PLH
PZH
PZL
PHZ
PLZ
THL
TLH
PHL
PLH
PZH
PZL
PHZ
PLZ
THL
TLH
amb
amb
,
,
,
,
,
,
,
,
C
P
f
f
C
V
N = number of inputs switching;
i
o
D
CC
= 40 C to +85 C
= 40 C to +125 C
PD
= input frequency in MHz;
L
(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 V
3-state output enable time
nOE to nYn
3-state output disable time
nOE to nYn
output transition time
propagation delay nAn to nYn V
3-state output enable time
nOE to nYn
3-state output disable time
nOE to nYn
output transition time
PD
V
Dynamic characteristics type 74HCT244
CC
r
= t
2
V
CC
f
= 6 ns; C
f
o
2
) = sum of outputs.
f
i
N + (C
Fig 6. Propagation delay input (1An, 2An) to output (1Yn, 2Yn) and transition time output
L
= 50 pF unless otherwise specified; for test circuit see
L
Measurement points are given in
V
(nYn)
V
OL
CC
2
and V
f
Conditions
V
V
V
V
V
V
o
) where:
CC
CC
CC
CC
CC
CC
CC
CC
OH
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
= 4.5 V; see
are typical voltage output drop that occur with the output load.
Rev. 03 — 22 December 2005
nYn output
nAn input
GND
V
…continued
V
OH
D
OL
V
in W):
I
Figure 6
Figure 7
Figure 7
Figure 6
Figure 6
Figure 7
Figure 7
Figure 6
90 %
Table
V
t
M
THL
11.
V
M
t
10 %
PHL
74HC244; 74HCT244
Min
-
-
-
-
-
-
-
-
Figure
V
V
Octal buffer/line driver; 3-state
M
M
t
TLH
8.
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
t
001aae013
Typ
-
-
-
-
-
-
-
-
PLH
Max
28
38
31
15
33
45
38
18
Unit
ns
ns
ns
ns
ns
ns
ns
ns
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