74VHC123A

The VHC123A is an advanced high speed CMOS Monostable Multivibrator fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one-shot. The VHC123A can be triggered on the positive transition of the clear while A is held low and B is held high. The output pulse width is determined by the equation: PW = (R_x)(C_x); where PW is in seconds, R is in ohms, and C is in farads.     Limits for R_x and C_x are:      External capacitor, C_xNo limit      External resistors, R_x V_CC = 2.0V, 5 kohm min      V_CC > 3.0V, 1 kohm min     An input protection circuit ensures that 0 to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.

• Fairchild 1,000 piece Budgetary Pricing. *
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• Top mark packaging information for product 74VHC123A is available. **

Product	Product Status	Eco Status	*Pricing	Package Type	Leads	Packing Method	Package Drawing	**Package Marking Convention	Qualification Support	RoHS IPC1752	RoHS/REACH/ JIG Certificate of Compliance
74VHC123AM	Full Production	ROHS Compliant	$0.292	SO 16L NB	16	RAIL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:74VHC123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260
74VHC123AMTC	Full Production	Green as of Jul 2011	$0.226	TSSOP 16L	16	RAIL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:V123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260
74VHC123AMTCX	Full Production	Green as of Jul 2011	$0.226	TSSOP 16L	16	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:V123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260
74VHC123AMX	Full Production	ROHS Compliant	$0.292	SO 16L NB	16	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:74VHC123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260
74VHC123ASJ	Full Production	ROHS Compliant	$0.372	SOP 16L	16	RAIL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:VHC123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260
74VHC123ASJX	Full Production	ROHS Compliant	$0.366	SOP 16L	16	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:VHC123A	FIT :  2.93   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260