74HCT123DB,118 NXP Semiconductors, 74HCT123DB,118 Datasheet - Page 10

• Manufacturer Part Number: 74HCT123DB,118
• Description: IC DUAL RETRIG MULTIVIB 16SSOP
• Manufacturer: NXP Semiconductors
• Series: 74HCTr

Specifications of 74HCT123DB,118

• Logic Type: Monostable
• Package / Case: 16-SSOP
• Independent Circuits: 2
• Schmitt Trigger Input: No
• Propagation Delay: 77ns
• Current - Output High, Low: 5.2mA, 5.2mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Elements Per Chip: 2
• Logic Family: HCT
• Input Bias Current (max): 0.008 mA
• Propagation Delay Time: 51 ns
• High Level Output Current: - 4 mA
• Low Level Output Current: 4 mA
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 74HCT123DB-T; 74HCT123DB-T; 935186840118

NXP Semiconductors
Table 7.
Voltages are referenced to GND (ground = 0 V); C
[1]
[2]
[3]
[4]
[5]
74HC_HCT123
Product data sheet
Symbol Parameter
t
t
R
C
C
W
rtrig
EXT
EXT
PD
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
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
C
P
f
f
D = duty factor in %;
C
V
C
∑(C
pd
W
W
rtrig
rtrig
i
o
D
CC
EXT
EXT
EXT
PD
= input frequency in MHz;
L
EXT
= output frequency in MHz;
= K × R
= typical output pulse width in ns;
is the same as t
= output load capacitance in pF;
= C
L
= 30 + 0.19 × R
= retrigger time in ns;
is used to determine the dynamic power dissipation (P
= supply voltage in V;
= external resistor in kΩ;
= external capacitor in pF;
= external capacitor in pF; R
= timing capacitance in pF;
× V
pulse width
retrigger time
external timing
resistor
external timing
capacitor
power
dissipation
capacitance
PD
Dynamic characteristics
CC
× V
EXT
EXT
2
× f
CC
× C
and C
o
2
) sum of outputs.
× f
EXT
PHL
EXT
i
+ ∑(C
, where:
EXT
CC
and t
× C
= 5.0 V) for the setup time of a retrigger pulse is valid:
Conditions
V
nA LOW; see
nB HIGH; see
nRD LOW; see
nQ HIGH and nQ LOW;
V
see
nA, nB; C
R
see
V
V
per monostable;
V
CC
combinations see
CC
CC
CC
CC
I
EXT
L
EXT
C
R
C
R
= GND to V
PLH
= 5.0 V and 0.55 for V
× V
EXT
EXT
EXT
EXT
Figure 10
Figure 10
= 4.5 V
= 5.0 V;
= 5.0 V; see
= 5.0 V; see
0.9
= 5 kΩ; V
; t
CC
t
+ 13 × R
= 100 nF;
= 10 kΩ
= 0 pF;
= 5 kΩ
EXT
2
is the same as t
EXT
× f
= external resistor in kΩ.
o
…continued
) + 0.75 × C
= 0 pF;
Figure 10
CC
and
Figure 10
CC
EXT
Figure 11
All information provided in this document is subject to legal disclaimers.
Figure
Figure 7
Figure 7
= 5.0 V;
1.05
11
, where:
THL
CC
7. If C
EXT
L
Rev. 6 — 14 March 2011
= 50 pF unless otherwise specified; for test circuit see
= 2.0 V.
and t
× V
[3][4]
EXT
[2]
[4]
[5]
CC
D
TLH
> 10 nF, the next formula is valid.
in μW).
2
Dual retriggerable monostable multivibrator with reset
× f
Min
20
20
20
2
-
-
-
-
-
o
+ D × 16 × V
25 °C
Typ
450
110
75
56
3
5
7
-
-
EXT
1000
EXT
Max
CC
-
-
-
-
-
-
-
-
74HC123; 74HCT123
< 50 pF.
and C
where:
−40 °C to +85 °C −40 °C to +125 °C Unit
Min
EXT
25
25
25
-
-
-
-
-
-
. The output pulse width will only be
Max
-
-
-
-
-
-
-
-
-
Min
30
30
30
-
-
-
-
-
-
© NXP B.V. 2011. All rights reserved.
Figure
Max
-
-
-
-
-
-
-
-
-
EXT
12.
>10 pF,
10 of 25
ns
ns
ns
μs
ns
ns
kΩ
pF
pF