74HC123D,652 Philips Semiconductors, 74HC123D,652 Datasheet - Page 11

• Manufacturer Part Number: 74HC123D,652
• Description: MILTIVIBRATOR; SO-16; IEC LOGIC; 7 V (MAX.); -40; +125; 1000 NS (MAX.) TR
• Manufacturer: Philips Semiconductors

Specifications of 74HC123D,652

• Circuit Type: High Speed, Low-Power Schottky, Silicon Gate
• Current, Leakage, Input: ±0.1 μA (Max.)
• Current, Quiescent Supply: 8.0 uA (Max.)
• Current, Supply: 160 μA
• Function Type: 3-Inputs
• Input Fall Time: 1000 ns (Max.)
• Input Rise Time: 1000 ns (Max.)
• Logic Function: Multivibrator
• Logic Type: CMOS
• Number Of Circuits: Dual
• Package Type: SO-16
• Power Dissipation: 500 mW (Max.)
• Special Features: Monostable, Retriggerable, Schmitt-Trigger
• Temperature, Operating, Maximum: 125 °C
• Temperature, Operating, Minimum: -40 °C
• Temperature, Operating, Range: -40 to +125 °C
• Voltage, Dc Input: 1.2 V (Typ.) @ 25 °C
• Voltage, Dc Output: 2.0 V (Typ.) @ 25 °C
• Voltage, Supply: 5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

Philips Semiconductors
Table 9.
Voltages are referenced to GND (ground = 0 V); C
For test circuit see
[1]
[2]
[3]
74HC_HCT123_4
Product data sheet
Symbol
t
t
t
T
t
t
t
t
PLH
THL
W
PHL
PLH
THL
W
amb
, t
, t
For other R
t
t
R
C
K = constant = 0.45 for V
The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is approximately 7 pF.
The time to retrigger the monostable multivibrator depends on the values of R
extended when the time between the active-going edges of the trigger input pulses meets the minimum retrigger time. If C
the next formula (at V
t
t
C
R
The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is 7 pF.
When the device is powered-up, initiate the device via a reset pulse, when C
W
W
rt
rt
= 40 C to +125 C
EXT
EXT
EXT
EXT
TLH
TLH
= 30 + 0.19
= typical retrigger time in ns;
= K
= typical output pulse width in ns;
= external resistor in k ;
= external capacitor in pF;
= external capacitor in pF;
= external resistor in k .
Dynamic characteristics 74HCT123
Parameter
propagation delay
output transition time
pulse width
propagation delay
propagation delay
output transition time
pulse width
R
EXT
nRD, nA, nB to nQ
nRD (reset) to nQ
nA LOW
nB HIGH
nRD LOW
nRD, nA, nB to nQ
nRD to nQ (reset)
nRD, nA, nB to nQ
nRD to nQ (reset)
nA LOW
nB HIGH
nRD LOW
EXT
and C
C
Figure
R
EXT
EXT
, where:
EXT
CC
C
12.
= 5.0 V) for the setup time of a retrigger pulse is valid:
CC
combinations see
EXT
= 5.0 V, see
0.9
+ 13
R
EXT
Figure
Figure
1.05
Conditions
C
V
V
see
see
see
C
C
V
V
see
see
see
, where:
8.
EXT
CC
CC
EXT
EXT
CC
CC
V
V
V
V
V
V
CC
CC
CC
CC
CC
CC
7. If C
Figure 10
Figure 10
Figure 11
Figure 10
Figure 10
Figure 11
= 4.5 V
= 4.5 V
= 4.5 V
= 4.5 V
…continued
L
= 0 pF; R
= 0 pF; R
= 0 pF; R
= 50 pF unless otherwise specified.
= 4.5 V
= 4.5 V
= 4.5 V
= 4.5 V
= 4.5 V
= 4.5 V
EXT
> 10 nF, the next formula is valid.
Dual retriggerable monostable multivibrator with reset
EXT
EXT
EXT
= 5 k ; see
= 5 k ; see
= 5 k ; see
EXT
EXT
< 50 pF.
74HC123; 74HCT123
Figure 9
Figure 9
Figure 9
and C
EXT
. The output pulse width will only be
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Min
-
-
-
25
25
25
-
-
-
-
-
30
30
30
Typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
64
58
19
-
-
-
77
69
77
69
22
-
-
-
EXT
>10 pF,
15 of 28
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns