HD74AC123A Datasheet, PDF (4/7 Pages) Hitachi Semiconductor – Dual Retriggerable Resettable Multivibrator

HD74AC123A
AC Characteristics: HD74AC123A
Ta = +25°C
Item
Propagation delay
A or B to Q
C_L = 50 pF
Symbol V_CC (V)*¹ Min Typ Max
t_PLH
3.3
1.0
—
19.0
5.0
1.0
—
15.0
Propagation delay t_PHL
3.3
1.0
—
19.0
A or B to Q
5.0
1.0
—
15.0
Propagation delay t_PLH
3.3
1.0
—
C_Dn to Q
5.0
1.0
—
Propagation delay t_PHL
3.3
1.0
—
C_Dn to Q
5.0
1.0
—
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
15.0
12.0
15.0
12.0
Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = –40°C
to +85°C
C_L = 50 pF
Min Max
1.0
22.0
1.0
17.0
1.0
22.0
1.0
17.0
1.0
18.0
1.0
13.5
1.0
18.0
1.0
13.5
Unit
Condition
ns Cext = 0 pF
Rest = 5 kΩ
ns
ns
ns
AC Operating Requirements: HD74AC123A
Ta = –40
Ta = +25°C
to +85°C
C_L = 50 pF
C_L = 50 pF
Item
Symbol V_CC (V)*¹
Typ
Guaranteed Minimum
Pulse width
t_w
3.3
—
5.0
7.0
A or B or C_Dn
5.0
—
4.5
5.0
Recovery time
t_rec
3.3
—
2.0
2.0
C_Dn to A or B
5.0
—
2.0
2.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Unit
ns
ns
Condition
Cext = 0 pF
Rext = 5 kΩ
Ta = –40°C
Ta = +25°C
to +85°C
Item
Output pulse width
C_L = 50 pF
Symbol V_CC (V)*¹ Min Typ Max
T_WQ
3.3
—
—
—
5.0
0.90 —
1.10
C_L = 50 pF
Min Max
—
—
0.85 1.15
Unit
Condition
ms Cext = 0.1 µF
Rext = 10 kΩ
Minimum output
pulse width
T_WQ(min) 3.3
5.0
190 —
160 —
350 170 380 ns Cext = 28 pF
300 140 330
RΩext = 2 k
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Cext and Rext should be connected as close to the IC terminals as possible, in order to prevent malfunction.
Rev.2.00, Jul.16.2004, page 4 of 6