74HC244 Philips, 74HC244 Datasheet - Page 2

• Manufacturer Part Number: 74HC244
• Description: Octal buffer/line driver 3-state
• Manufacturer: Philips

Philips Semiconductors
FEATURES
GENERAL DESCRIPTION
The 74HC/HCT244 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. For HC the condition is V
ORDERING INFORMATION
See
December 1990
t
C
C
PHL
SYMBOL
Output capability: bus driver
I
Octal buffer/line driver; 3-state
I
PD
CC
f
f
C
V
For HCT the condition is V
i
o
“74HC/HCT/HCU/HCMOS Logic Package Information”
/ t
CC
PD
L
category: MSI
= output frequency in MHz
= input frequency in MHz
(C
PLH
= output load capacitance in pF
P
is used to determine the dynamic power dissipation (P
= supply voltage in V
L
D
= C
V
amb
CC
propagation delay
input capacitance
power dissipation capacitance per buffer
PD
2
1A
2A
= 25 C; t
n
n
V
f
to 1Y
to 2Y
o
CC
) = sum of outputs
2
n
n
;
f
r
i
= t
PARAMETER
I
I
f
= GND to V
= GND to V
= 6 ns
(C
L
V
CC
2
CC
CC
f
o
) where:
1.5 V
C
notes 1 and 2
2
.
L
The 74HC/HCT244 are octal non-inverting buffer/line
drivers with 3-state outputs. The 3-state outputs are
controlled by the output enable inputs 1OE and 2OE.
A HIGH on nOE causes the outputs to assume a high
impedance OFF-state. The “244” is identical to the “240”
but has non-inverting outputs.
= 15 pF; V
D
in W):
CONDITIONS
CC
= 5 V
9
3.5
35
HC
74HC/HCT244
TYPICAL
Product specification
11
3.5
35
HCT
ns
pF
pF
UNIT