74F841 Datasheet, PDF (12/18 Pages) NXP Semiconductors – Bus interface latches

Philips Semiconductors
Bus interface latches
Product specification
74F841/74F842/74F843/
74F845/74F846
AC ELECTRICAL CHARACTERISTICS for 74F843/74F845
SYMBOL
PARAMETER
t_PLH
t_PHL
t_PLH
t_PHL
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Propagation delay
Dn to Qn
Propagation delay
LE to Qn
Propagation delay
PRE to Qn
Propagation delay
MR to Qn
Output enable time
High or Low-level OEn to Qn
Output disable time
High or Low-level OEn to Qn
TEST
CONDITION
Waveform 1, 2
Waveform 1, 2
Waveform 3
Waveform 3
Waveform 5
Waveform 6
Waveform 5
Waveform 6
LIMITS
T_amb = +25°C
V_CC = +5.0V
C_L = 50pF, R_L = 500Ω
MIN TYP MAX
T_amb = 0°C to +70°C
V_CC = +5.0V ± 10%
C_L = 50pF, R_L = 500Ω
MIN
MAX
2.0
4.5
7.5
2.0
8.5
2.5
4.5
8.0
2.5
8.5
4.5
6.5
9.5
4.5
10.0
4.0
6.0
8.5
4.0
8.5
UNIT
ns
ns
3.5
5.5
8.5
3.0
9.0
ns
2.0
4.5
7.5
2.0
2.5
4.5
7.5
2.0
4.0
6.0
9.5
3.0
1.0
4.5
8.0
1.0
1.0
5.0
8.0
1.0
8.0
ns
8.0
10.5
ns
8.5
8.5
ns
AC SETUP REQUIREMENTS for 74F843/74F845
SYMBOL
PARAMETER
t_s(H)
t_s(L)
t_h(H)
t_h(L)
t_w(H)
t_w(L)
t_w(H)
t_REC
t_REC
Setup time, High or Low
Dn to LE
Hold time, High or Low
Dn to LE
LE pulse width, High
PRE pulse width, Low
MR pulse width, Low
PRE recovery time
MR recovery time
TEST
CONDITION
Waveform 4
Waveform 4
Waveform 4
Waveform 3
Waveform 3
Waveform 3
Waveform 3
LIMITS
T_amb = +25°C
V_CC = +5.0V
C_L = 50pF, R_L = 500Ω
MIN
TYP
T_amb = 0°C to +70°C
V_CC = +5.0V ± 10%
C_L = 50pF, R_L = 500Ω
MIN
MAX
1.0
0.0
1.0
0.0
3.0
3.0
4.0
4.0
3.0
3.0
4.0
5.0
4.0
5.0
0.0
0.0
3.5
4.5
UNIT
ns
ns
ns
ns
ns
ns
ns
1999 Jun 23
12