SN74LVC1G123 Series

Single retriggerable monostable multivibrator with Schmitt-trigger inputs

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Catalog

Single retriggerable monostable multivibrator with Schmitt-trigger inputs

Part	Logic Type	Propagation Delay	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case	Package / Case	Package / Case	Independent Circuits	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package
Texas Instruments 74LVC1G123DCURG4	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V	0.091 in	8-VFSOP	2.3 mm	1	Surface Mount	125 °C	-40 °C
Texas Instruments SN74LVC1G123DCTT	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V				1	Surface Mount	125 °C	-40 °C	SM8
Texas Instruments SN74LVC1G123DCTR	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V				1	Surface Mount	125 °C	-40 °C	SM8
Texas Instruments 74LVC1G123DCTRG4	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V				1	Surface Mount	125 °C	-40 °C	SM8
Texas Instruments SN74LVC1G123DCUT	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V	0.091 in	8-VFSOP	2.3 mm	1	Surface Mount	125 °C	-40 °C
Texas Instruments SN74LVC1G123DCUR	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V	0.091 in	8-VFSOP	2.3 mm	1	Surface Mount	125 °C	-40 °C
Texas Instruments 74LVC1G123DCTTE4	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V				1	Surface Mount	125 °C	-40 °C	SM8
Texas Instruments SN74LVC1G123YZPR	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V		8-XFBGA, DSBGA		1	Surface Mount	85 °C	-40 °C	8-DSBGA
Texas Instruments 74LVC1G123DCUTG4	Monostable	18.5 ns	32 mA	32 mA	1.65 V	5.5 V	0.091 in	8-VFSOP	2.3 mm	1	Surface Mount	125 °C	-40 °C

Key Features

• Available in the Texas Instruments NanoFree™ PackageSupports 5V VCC OperationInputs Accept Voltages to 5.5VMax tpd of 8ns at 3.3VSupports Mixed-Mode Voltage Operation on All PortsSupports Down Translation to VCCSchmitt-Trigger Circuitry on A and B Inputs for Slow Input Transition RatesEdge Triggered From Active-High or Active-Low Gated Logic InputsRetriggerable for Very Long Output Pulses, Up to 100% Duty CycleOverriding Clear Terminates Output PulseGlitch-Free Power-Up Reset on OutputsIoff Supports Live Insertion, Partial-Power-Down Mode, and Back-Drive ProtectionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000V Human-Body Model (A114-A)200V Machine Model (A115-A)1000V Charged-Device Model (C101)Available in the Texas Instruments NanoFree™ PackageSupports 5V VCC OperationInputs Accept Voltages to 5.5VMax tpd of 8ns at 3.3VSupports Mixed-Mode Voltage Operation on All PortsSupports Down Translation to VCCSchmitt-Trigger Circuitry on A and B Inputs for Slow Input Transition RatesEdge Triggered From Active-High or Active-Low Gated Logic InputsRetriggerable for Very Long Output Pulses, Up to 100% Duty CycleOverriding Clear Terminates Output PulseGlitch-Free Power-Up Reset on OutputsIoff Supports Live Insertion, Partial-Power-Down Mode, and Back-Drive ProtectionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000V Human-Body Model (A114-A)200V Machine Model (A115-A)1000V Charged-Device Model (C101)

Description

The SN74LVC1G123 device is a single retriggerable monostable multivibrator designed for 1.65V to 5.5V VCC operation. This monostable multivibrator features output pulse-duration control by three methods. In the first method, the A input is low, and the B input goes high. In the second method, the B input is high, and the A input goes low. In the third method, the A input is low, the B input is high, and the clear ( CLR) input goes high. The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR low. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A and B inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs. The SN74LVC1G123 device is a single retriggerable monostable multivibrator designed for 1.65V to 5.5V VCC operation. This monostable multivibrator features output pulse-duration control by three methods. In the first method, the A input is low, and the B input goes high. In the second method, the B input is high, and the A input goes low. In the third method, the A input is low, the B input is high, and the clear ( CLR) input goes high. The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR low. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A and B inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs.