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SN74AHCT123ADE4 Arkusz danych(PDF) 4 Page - Texas Instruments

Numer części SN74AHCT123ADE4
Szczegółowy opis  DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
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Strona internetowa  http://www.ti.com
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SN54AHCT123A, SN74AHCT123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
SCLS420G – JUNE 1998 – REVISED APRIL 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
SN54AHCT123A
SN74AHCT123A
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
–8
–8
mA
IOL
Low-level output current
8
8
mA
Rext
External timing resistance
1k
1k
∆t/∆VCC
Power-up ramp rate
1
1
ms/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 4: Unused Rext/Cext terminals should be left unconnected. All remaining unused inputs of the device must be held at VCC or GND to ensure
proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54AHCT123A
SN74AHCT123A
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = –50 mA
45 V
4.4
4.5
4.4
4.4
V
VOH
IOH = –8 mA
4.5 V
3.94
3.8
3.8
V
VOL
IOL = 50 mA
45 V
0.1
0.1
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.5
0.44
V
Rext/Cext†
VI = VCC or GND
5.5 V
±0.25
±2.5
±2.5
II
A, B,
and CLR
VI = VCC or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
ICC
Quiescent
VI = VCC or GND, IO = 0
5.5 V
4
40
40
mA
ICC
Active state
(per circuit)
VI = VCC or GND,
Rext/Cext = 0.5 VCC
5.5 V
560
750
975
975
mA
∆ICC‡
One input at 3.4 V, Other
inputs at VCC or GND
5.5 V
1.35
1.5
1.5
mA
Ci
VI = VCC or GND
5 V
1.9
10
10
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
† This test is performed with the terminal in the off-state condition.
‡ This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC.
timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V
(unless otherwise noted) (see Figure 1)
TEST CONDITIONS
TA = 25°C
SN54AHCT123A
SN74AHCT123A
UNIT
TEST CONDITIONS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
t
Pulse
CLR
5
5
5
ns
tw
duration
A or B trigger
5
5
5
ns
t
Pulse retrigger time
Rext = 1 kΩ, Cext = 100 pF
§
60
§
§
ns
trr
Pulse retrigger time
Rext = 1 kΩ, Cext = 0.01 mF
§
1.5
§
§
ms
§ See retriggering data in the application information section.


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