74LVC2244 Philips Semiconductors, 74LVC2244 Datasheet - Page 2

• Manufacturer Part Number: 74LVC2244
• Description: Octal buffer/line driver with 30 ohm series termination resistors; 5 V input/output tolerant; 3-state
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
Ground = 0 V; T
Note
1. C
1999 Sep 30
t
C
C
PHL
SYMBOL
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range of 1.2 to 3.6 V
CMOS low power consumption
Direct interface with TTL levels
Integrated 30
I
PD
Octal buffer/line driver with 30
resistors; 5 V input/output tolerant; 3-state
P
f
f
C
V
i
o
/t
(C
D
CC
PD
= input frequency in MHz;
L
PLH
= output frequency in MHz;
= output load capacitance in pF;
= C
L
is used to determine the dynamic power dissipation (P
= supply voltage in Volts;
PD
V
CC
propagation delay 1A
input capacitance
power dissipation capacitance per buffer
2
V
amb
CC
termination resistors.
f
o
2
= 25 C; t
) = sum of the outputs.
f
i
+ (C
r
L
PARAMETER
= t
f
V
CC
n
2.5 ns.
to 1Y
2
f
o
n
) where:
; 2A
n
to 2Y
n
series termination
2
DESCRIPTION
The 74LVC2244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3 or 5 V devices. In
3-state operation, outputs can handle 5 V. These features
allow the use of these devices as translators in a mixed
3.3/5 V environment.
The 74LVC2244A is an octal non-inverting buffer/line
driver 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. Schmitt-trigger action at all
inputs makes the circuit highly tolerant for slower input rise
and fall times. The 74LVC2244A is designed with 30
series termination resistors in both HIGH and LOW output
stages to reduce line noise.
D
C
V
I
L
in W).
= GND to V
= 50 pF; V
CONDITIONS
CC
CC
; note 1
= 3.3 V
4.0
5.0
25
TYPICAL
Product specification
74LVC2244A
ns
pF
pF
UNIT