74lvc244abq NXP Semiconductors, 74lvc244abq Datasheet - Page 2

• Manufacturer Part Number: 74lvc244abq
• Description: Octal Buffer/line Driver With 5 V Tolerant Inputs/outputs 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. The condition is V
2003 Oct 30
t
C
C
PHL
SYMBOL
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range from 1.2 to 3.6 V
CMOS low power consumption
Direct interface with TTL levels
Inputs accept voltages up to 5.5 V
High-impedance when V
Bushold on all data inputs (74LVCH244A only)
Complies with JEDEC standard no. 8-1A
ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
Specified from 40 to +85 C and 40 to +125 C.
I
PD
Octal buffer/line driver with 5 V tolerant
inputs/outputs (3-state)
P
f
f
C
V
N = total load switching outputs;
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
amb
propagation delay 1An to 1Yn, 2An to 2Yn
input capacitance
power dissipation capacitance per buffer
2
V
CC
= 25 C; t
f
o
2
) = sum of the outputs.
I
f
= GND to V
i
N + (C
CC
r
= t
PARAMETER
= 0 V
f
2.5 ns.
L
CC
.
V
CC
2
f
o
) where:
2
C
V
CC
L
DESCRIPTION
The 74LVC244A/74LVCH244A 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 and 5 V environment.
The 74LVC244A/74LVCH244A 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 244 is functionally identical to the 240, but the 240 has
inverting outputs.
= 50 pF; V
D
= 3.3 V; notes 1 and 2
in W).
CONDITIONS
CC
= 3.3 V
2.8
4.0
10
TYPICAL
74LVCH244A
Product specification
74LVC244A;
ns
pF
pF
UNIT