74ABT843PW Просмотр технического описания (PDF) - Philips Electronics
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74ABT843PW Datasheet PDF : 14 Pages
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Philips Semiconductors
9-bit bus interface latch with set and reset
(3-State)
Product specification
74ABT843
AC CHARACTERISTICS
SYMBOL
PARAMETER
WAVEFORM
tPLH
Propagation delay
tPHL
Dn to Qn
1
tPLH
Propagation delay
tPHL
LE to Qn
2
tPLH
Propagation delay
tPHL
PRE to Qn
1
tPLH
Propagation delay
tPHL
MR to Qn
1
tPZH
Output enable time
4
tPZL
OE to Qn
5
tPHZ
Output disable time
4
tPLZ
OE to Qn
5
AC SETUP REQUIREMENTS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
WAVEFORM
ts(H)
ts(L)
Setup time, High or Low
Dn to LE
3
th(H)
th(L)
Hold time, High or Low
Dn to LE
3
tw(H)
LE pulse width, High
3
tw(L)
PRE pulse width, Low
6
tw(L)
MR pulse width, Low
6
trec
PRE recovery time
6
trec
MR recovery time
6
LIMITS
Tamb = +25oC
VCC = +5.0V
Min
Typ
Max
1.6
3.6
5.2
2.2
5.0
6.3
2.0
4.1
5.6
2.8
4.8
6.3
2.2
4.7
6.2
3.0
5.2
6.5
2.5
5.0
6.3
3.1
5.5
6.8
1.0
2.7
4.2
2.0
4.2
5.5
2.9
4.9
6.2
2.2
5.0
6.3
Tamb = -40 to
+85oC
VCC = +5.0V ±0.5V
Min
Max
1.6
6.0
2.2
7.2
2.0
6.5
2.8
6.9
2.2
7.4
3.0
7.2
2.5
7.1
3.1
8.0
1.0
5.2
2.0
6.5
2.9
6.8
2.2
6.7
UNIT
ns
ns
ns
ns
ns
ns
LIMITS
Tamb = +25oC
VCC = +5.0V
Min
Typ
Tamb = -40 to +85oC
VCC = +5.0V ±0.5V
Min
2.5
1.1
2.5
3.0
1.3
3.0
1.0
–1.0
1.0
1.0
–1.0
1.0
3.3
1.8
3.3
4.5
3.0
4.5
5.5
4.0
5.5
2.9
1.6
2.9
3.6
2.0
3.6
UNIT
ns
ns
ns
ns
ns
ns
ns
1998 Jan 16
6
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