74HC123A Datasheet, PDF (1/4 Pages) Rochester Electronics – Dual Retriggerable Monostable Multivibrator Typical propagation delay: 25 ns

MM74HC123A
Dual Retriggerable Monostable Multivibrator
General Description
Features
September 1983
7 4 H C 1 2 3 A ^{The MM74HC123A high speed monostable multivibrators}
(one
ogy.
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tky TTL circuitry while retaining the low power and high
■ Typical propagation delay: 25Rnesvised _{May 2001}
LLC^■. A^Wll ⁱR^di^egh^pt^os^wR^ee^rs^se^urv^pe^pd^ly0^r4^a2ⁿ4^g2^e01^: 3^2V–6V
■ Low quiescent current: 80 µA maximum (74HC Series)
MM74HC123A ^{noise immunity characteristic of CMOS circuits.}
Each multivibrator features both a negative, A, and a posi-
■ Low input current: 1 µA maximum
■ Fanout of 10 LS-TTL loads
Dual Retriggerable Monostable Multivibrator ^{tive, B, transition triggered input, either of which can be}
used as an inhibit input. Also included is a clear input that
■ Simple pulse width formula T = RC
■ Wide pulse range: 400 ns to ∞ (typ)
when taken low resets the one shot. The MM74HC123A
G^cAainse^bhn^eele^tdrir_Lga^gOel_WreD_adne^odns_Bthc_iesr^phip^oelsdt^iti^iHvo^eIGn^{tHra.nsition of the clear while}
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(goenreedsrheoptesa) _{tuetdilliyzewhaidlevathnecier} doustpiliuctosna-greatgeenCeMraOtiSngteacphunlosel-
oangdy. _{tThheepyufleseatwurilel bsepeeexdtesncdoemd.parable} to low power Schot-
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haingdh
out-
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A is held LOW and B is held HIGH.
The MM74HC123A is retriggerable. That is it may be trig-
gOerredd ererpienatgedlyCwohidleeth:eir outputs are generating a pulse
■ Part to part variation: ±5% (typ)
■^FeSc^ah^tm^uit^rt T^er^sigger A & B inputs allow rise and fall times to
■ ^{bTyepaicsasl lporwopaasgoantieonsedceolanyd:} 25 ns
■ Wide power supply range: 2V–6V
■ Low quiescent current: 80 µA maximum (74HC Series)
■ Low input current: 1 µA maximum
■ Fanout of 10 LS-TTL loads
■ Simple pulse width formula T = RC
■ Wide pulse range: 400 ns to ∞ (typ)
■ Part to part variation: ±5% (typ)
■ Schmitt Trigger A & B inputs allow rise and fall times to
be as slow as one second
and the pulse will be extended.
P^Oul^rs^de^ew^r i^Ndt^uh^ms^bta^eb^rility ^Po^av^ce^kr ^aa^gw^eid^Ne^ur^man^bg^ee^r of temperature and
Package Description
MsMup7p4lyHiCs1a2c3hAieMved using linMe1a6r ACMOS te1c6h-nLiqeuaedsS. mThaell oOuut-tline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
MpMut7p4uHlsCe12e3qAuSatJion ^{is simpMly1:6PDW = (R}E1X6T-)Le(CaEdXSTm); awllhOeruetline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MPMW74isHCin12s3ecAoMnTdCs, ^{R is iMn} ToCh1m6s, ^and 1C6-iLseiandfTahraindsS.hArilnl k Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
inputs are protected from damage due to static discharge
MbMy 7d4ioHdCes12to3AVN_{CC and grounNd1.6E}
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
OCordnenreincgtioCnoDdeia:gram
Timing Component
Order Number Package Number
Package Description
MM74HC123AM
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
MM74HC123ASJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HC123AMTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HC123AN
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Note: Pin 6 and Pin 14 must be hard-wired to GND.
Timing Component
Top View
Rochester Ordering Guide
Note: Pin 6 and Pin 14 must be hard-wired to GND.
*Most products can also be offered as RoHS compliant, designated by a –G suffix. Please contact factory for more information.
© 2001 Fairchild Semiconductor Corporation DS005206
www.fairchildsemi.com
Rochester Part Number
Fairchild Part Number
Package
Temperature
MM74HC123AN
MM74HC123AN
PDIP-16
-40° to +85°C
MM74HC123AM
MM74HC123AM
SOP-16, Plastic
-40° to +85°C
MM74HC123AMTC
MM74HC123ASJ
MM74HC123AMTC
Top View _MM74HC123ASJ
TSSOP-16, Plastic
SOP-16, Plastic
-40° to +85°C
-40° to +85°C
Please contact factory for specific package availability
© 2001 Fairchild Semico^anⁿdu^dcto^Mr Cⁱo^lirp^taor^ra^ytio^/n^AerD^oS^s0^p05^a2^c06^{e specifications/availability.} www.fairchildsemi.com
Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes
only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves
the right to make changes without further notice to any specification herein.
Specification Number 74HC123-I (F) Rev C
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