MC74F544DW Просмотр технического описания (PDF) - Motorola => Freescale
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MC74F544DW Datasheet PDF : 4 Pages
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AC ELECTRICAL CHARACTERISTICS
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Transparent Mode
An to Bn or Bn to An
Propagation Delay
LEBA to An
Propagation Delay
LEAB to Bn
Output Enable Time
OEBA or OEAB to An or Bn
EBA or EAB to An or Bn
Output Disable Time
OEBA or OEAB to An or Bn
EBA or EAB to An or Bn
AC OPERATING REQUIREMENTS
Symbol
ts(H)
ts(L)
th(H)
th(L)
tw(L)
Parameter
Setup Time, HIGH or LOW
An or Bn to LEBA or LEAB
Hold Time, HIGH or LOW
An to Bn to LEBA or LEAB
Latch Enable, B to A
Pulse Width, LOW
MC74F544
74F
74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
TA = 0 °C to + 70°C
VCC = + 5.0 V ± 10%
CL = 50 pF
Min
Typ
Max
Min
Max
Unit
2.0
—
9.5
2.0
10.5
2.0
—
6.5
2.0
7.5
ns
6.0
—
13
4.0
—
9.5
6.0
4.0
14.5
10.5
ns
6.0
—
13
6.0
14.5
4.0
—
9.5
4.0
10.5
ns
3.0
—
9.0
3.0
4.0
—
10.5
4.0
10
12
ns
1.5
—
8.0
1.5
1.5
—
7.5
1.5
9.0
8.5
ns
74F
74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
TA = 0°C to + 70°C
VCC = + 5.0 V ± 10%
CL = 50 pF
Min
Typ
Max
Min
Typ
Max
Unit
3.0
—
—
3.0
—
—
3.0
—
—
3.0
—
—
ns
3.0
—
—
3.0
—
—
3.0
—
—
3.0
—
—
ns
6.0
—
—
7.5
—
—
ns
FAST AND LS TTL DATA
4-218
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