HD74AC298 Datasheet, PDF (3/10 Pages) Hitachi Semiconductor – Quad 2-Input Multiplexer with Storage

Logic Diagram
I1a
I0a
S
I1b
I0b
HD74AC298/HD74ACT298
I1c
I0c
I1d
I0d
CP
R
CP
S Qa
R
CP
S Qb
R
CP
S Qc
R
CP
S Qd
Qa
Qb
Qc
Qd
DC Characteristics (unless otherwise specified)
Item
Symbol Max
Unit
Maximum quiescent supply current I_CC
80
µA
Maximum quiescent supply current I_CC
8.0
µA
Maximum I_CC/input (HD74ACT298) I_CCT
1.5
mA
Condition
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = Worst case
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = 25°C
V_IN = V_CC – 2.1 V, V_CC = 5.5 V,
Ta = Worst case
AC Characteristics: HD74AC298
Item
Maximum count
frequency
Symbol
f _max
V_CC (V)*¹
3.3
5.0
Ta = +25°C
C_L = 50 pF
Min Typ
90
—
110 —
Propagation delay
t _PLH
3.3
CP to Q
5.0
1.0
7.0
1.0
5.0
Propagation delay
t _PHL
3.3
CP to Q
5.0
1.0
7.5
1.0
5.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Max
—
—
10.0
7.5
10.0
7.5
Ta = –40°C to +85°C
C_L = 50 pF
Min
Max
70
—
100
—
1.0
11.5
1.0
8.5
1.0
11.5
1.0
8.5
Unit
MHz
ns
3