74HC643 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Lista de partido
74HC643 Datasheet PDF : 6 Pages
| |||
Philips Semiconductors
Octal bus transceiver; 3-state;
true/inverting
Product specification
74HC/HCT643
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
An
Bn
OE
DIR
UNIT LOAD COEFFICIENT
1.50
0.40
1.50
0.90
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL
PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
An to Bn;
inverting
10 20
25
30 ns 4.5 Fig.5
tPHL/ tPLH propagation delay
Bn to An;
non-inverting (true)
13 23
29
35 ns 4.5 Fig.6
tPZH/ tPZL 3-state output enable time
16 30
38
45 ns 4.5 Fig.7
OE, DIR to An;
OE, DIR to Bn
tPHZ/ tPLZ 3-state output disable time
17 30
38
45 ns 4.5 Fig.7
OE, DIR to An;
OE, DIR to Bn
tTHL/ tTLH output transition time
5 12
15
18 ns 4.5 Fig.5 and Fig.6
December 1990
5
Share Link: 