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PDF IN74VHC244 Data sheet ( Hoja de datos )
| Número de pieza | IN74VHC244 | |
| Descripción | Octal Buffer/Line Driver | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
Octal Buffer /Line Driver NINV (3-state)
IN74VHC244
IN74VHC244 is high-speed logic IC made by CMOS
technology and designed for use in high-performance
calculating systems with a wide supply voltage range.
As for operation speed, IN74VHC244 can be compared
with equivalent bipolar ICs based on Schottky TTL and two
times surpasses ICs of IN74НС series.
IN74VHC244 tolerates operation under conditions when
voltage on input is exceeded up to 7V without affecting
characteristics and IC reliability. This possibility allows to
use IN74VHC244 in radio-electronic devices for interfacing
with supply voltages 5V and 3V, eliminate IC failure under
supply voltage source emergency outage.
Use of output edge shaping block in the microcircuit
allows to reduce noise amplitude of noises when switching
outputs into the same state simultaneously.
Input and output levels of IN74VHC244D are compatible
with CMOS levels
ORDERING INFORMATION
IN74VHC244N Plastic
IN74VHC244DW SOIC
TA = -40° to 85° C for all packages
Features:
• Supply voltage range 2.0 to 5.5 V.
• Output current 8 mA.
• Low consumption current: 0.2 mkA (typical value) at Та = 25 °С.
• Latchup current not less than 300 mA at Та = 85 °С.
• Tolerable value of static potential not less than 2000 V as per human body model
(HBM) and not less than 200 V as per machine model (ММ).
• Ambient operation temperature minus 40 to plus 85 °С.
• Balanced signal propagation delay.
• Ensures voltage exceeding mode on input
• Low noise level at the simultaneous switching of outputs in the same state: VOLP = 0.8
V (max).
• For pins and functions, compatible with IN74HC244.
.
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IN74VHC244
AC electrical characteristics (tLH = tHL = 3.0 ns)
Symbol
Parameter
Test
conditi VCC, V
ons
Value
CL,
pF
25 °C
–40
to 85 °C
min max min max
tPHL, tPLH Propagation delay time Figure 3.3 ± 0.3 15
when switching "on", 1
50
– 8.4 – 10.0
– 11.9 – 13.5
"off"
5.0 ± 0.5 15 – 5.5 – 6.5
50 – 7.5 – 8.5
tPHZ , tPLZ Propagation delay time Figure 3.3 ± 0.3 50
under transition from 2
– 14.0 – 16.0
high , low level into "off"
state
5.0 ± 0.5 50 – 9.2 – 10.5
tPZH , tPZL
Propagation delay time Figure
under transition from 2
«off» state into high, low
level
tOSLH, tOSHL Propagation
difference
outputs
delays –
between
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.5 ± 0.5
15
50
15
50
50
50
– 10.6 – 12.5
– 14.1 – 16.0
– 7.3 – 8.5
– 9.3 – 10.5
– 1.5 – 1.5
– 1.0 – 1.0
Unit
ns
Capacitance characteristics
Symbol
Parameter
CI Input capacity
CO Output capacity
CРD Dynamic capacity
Test conditions
-
-
VI = 0 V orVCC
VCC, V
5.0
5.0
5.0
Value
25 °C
min max
10
12
38
Unit
pF
pF
pF
Noise characteristics (CL = 50 pF)
Parameter
Symbol
VOLP
VOLV
VCC, V
Positive noise of low output voltage 5.0
Negative noise of low output 5.0
voltage
VIHD Input dynamic high voltage
VILD Input dynamic low voltage
5.0
5.0
Value
min max
- 0.9
-0.9 -
3.5 -
- 1.5
Unit
V
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet IN74VHC244.PDF ] | |
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