74HC7245 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Lista de partido
74HC7245 Datasheet PDF : 7 Pages
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Philips Semiconductors
Octal bus Schmitt-trigger transceiver;
3-state
Product specification
74HC/HCT7245
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;
Bn to An
17 30
37
45 ns 4.5 Fig.7
tPZH/ tPZL 3-state output enable time
19 32
40
48 ns 4.5 Fig.7
OE to An;
OE to Bn
tPHZ/ tPLZ 3-state output disable
time
19 32
40
48 ns 4.5 Fig.7
OE to An;
OE to Bn
tTHL/ tTLH output transition time
5 12
15
18 ns 4.5 Fig.7
TRANSFER CHARACTERISTIC WAVEFORMS
handbook, halfpage VO
MBA325
VH
VI
VT
VT
Fig.4 Transfer characteristic.
handbook, halfpage
VT
VI
VO
VH
VT
MBA324
Fig.5 Waveforms showing the definition of
VT+, VT − and VH.
December 1990
6
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