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Part Name(s) : SN74LS221 SN74LS221D SN74LS221N SN74LS221M SN74LS221ML1 SN74LS221ML2 ON-Semiconductor
ON Semiconductor
Description : Dual MONOSTABLE MULTIVIBRATORS WITH Schmitt−Trigger INPUTS

Dual MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

• SN74LS221 is a Dual Highly Stable One-Shot
• Overriding Clear Terminates Output Pulse
• Pin Out is Identical to SN74LS123

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Part Name(s) : 54LS221 74LS221 Motorola
Motorola => Freescale
Description : DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
LOW POWER SCHOTTKY

• SN54LS221 and SN74LS221 is a Dual Highly Stable One-Shot
• Overriding Clear Terminates Output Pulse
• Pin Out is Identical to SN54/74LS123

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Part Name(s) : 74LS221N SN54LS221 SN54LS221J SN74LS221 SN74LS221D SN74LS221N Motorola
Motorola => Freescale
Description : DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

Each multivibrator of the LS221 features a negative-transition-triggered input and a positive-transition-triggered inputeither of which can be used as an inhibit input.
Pulse triggering occurs at a voltage level and is not related to the transition time of the input pulse. SCHMITT-TRIGGER input circuitry for B input allows jitter-free triggering for INPUTS as slow as 1 volt/second, providing the circuit WITH excellent noise immunity. A high immunity to VCC noise is also provided by internal latching circuitry.

• SN54LS221 and SN74LS221 is a Dual Highly Stable One-Shot
• Overriding Clear Terminates Output Pulse
• Pin Out is Identical to SN54/74LS123

 

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Part Name(s) : SN74LS221D SN74LS221DR2 SN74LS221N SN74LS221 ONSEMI
ON Semiconductor
Description : Dual MONOSTABLE MULTIVIBRATORS WITH Schmitt−Trigger INPUTS

Each multivibrator of the LS221 features a negative-transitiontriggered input and a positive-transition-triggered input either of which can be used as an inhibit input.
Pulse triggering occurs at a voltage level and is not related to the transition time of the input pulse. SCHMITT-TRIGGER input circuitry for B input allows jitter-free triggering for INPUTS as slow as 1 volt/second, providing the circuit WITH excellent noise immunity. A high immunity to VCC noise is also provided by internal latching circuitry.

• SN74LS221 is a Dual Highly Stable One-Shot
• Overriding Clear Terminates Output Pulse
• Pin Out is Identical to SN74LS123

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Part Name(s) : SN54LV221A SN74LV221A SN74LV221AD SN74LV221ADBR SN74LV221ADG4 SN74LV221ADGVR SN74LV221ADR SN74LV221ANSR SN74LV221APW SN74LV221APWR SN74LV221APWT SNJ54LV221AFK SNJ54LV221AJ SNJ54LV221AW 74LV221A LV221A Texas-Instruments
Texas Instruments
Description : DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

description/ordering information
The ’LV221A devices are dual MULTIVIBRATORS designed for 2-V to 5.5-V VCC operation. Each multivibrator has a negative-transition-triggered (A) input and a positive-transition-triggered (B) input, either of which can be used as an inhibit input.
   
● 2-V to 5.5-V VCC Operation
● Max tpd of 11 ns at 5 V
● Support Mixed-Mode Voltage Operation on
    All Ports
SCHMITT-TRIGGER Circuitry on A, B, and CLR
    INPUTS for Slow Input Transition Rates
● Overriding Clear Terminates Output Pulse
● Glitch-Free Power-Up Reset on Outputs
● Ioff Supports Partial-Power-Down Mode
    Operation
● Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
● ESD Protection Exceeds JESD 22
    − 2000-V Human-Body Model (A114-A)
    − 200-V Machine Model (A115-A)
    − 1000-V Charged-Device Model (C101)
   

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Part Name(s) : SN54LV123A SN74LV123A SN74LV123AD SN74LV123ADB SN74LV123ADBR SN74LV123ADBRE4 SN74LV123ADBRG4 SN74LV123ADE4 SN74LV123ADG4 SN74LV123ADGVR SN74LV123ADR SN74LV123ADRE4 SN74LV123ADRG4 SN74LV123ANS SN74LV123ANSR SN74LV123APW SN74LV123APWE4 SN74LV123APWG4 SN74LV123APWR SN74LV123APWRE4 SN74LV123APWRG4 SN74LV123APWT SN74LV123APWTE4 SN74LV123APWTG4 SN74LV123ARGY TI
Texas Instruments
Description : Dual Retriggerable MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

Description
The LV123A devices are dual retriggerable MONOSTABLE MULTIVIBRATORS designed for 2-V to 5.5-V VCC operation.

Features
• 2-V to 5.5-V VCC Operation
• Maximum tpd of 11 ns at 5 V
• Typical VOLP (Output Ground Bounce)
   < 0.8 V at VCC = 3.3 V, TA = 25°C
• Typical VOHV (Output VOH Undershoot)
   > 2.3 V at VCC = 3.3 V, TA = 25°C
• Support Mixed-Mode Voltage Operation on All Ports
SCHMITT-TRIGGER Circuitry on A, B, and CLR INPUTS for Slow Input Transition Rates
• Edge Triggered From Active-High or Active-Low Gated Logic INPUTS
• Ioff Supports Partial-Power-Down Mode Operation
• Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle
• Overriding Clear Terminates Output Pulse
• Glitch-Free Power-Up Reset on Outputs
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class 11
• ESD Protection Exceeds JESD 22
   – 2000-V Human-Body Model (A114-A)
   – 200-V Machine Model (A115-A)
   – 1000-V Charged-Device Model (C101)

Applications
• AV Receivers
• Blu-ray Players and Home Theaters
• DVD Recorders and Players
• Desktop PCs or Notebook PCs
• Digital Radio and Internet Radio Players
• Digital Video Cameras (DVC)
• Embedded PCs
• GPS: Personal Navigation Devices
• Mobile Internet Devices
• Network Attached Storage (NAS)
• Personal Digital Assistant (PDA)
• Server PSU
• Solid-State Drive (SSD): Client and Enterprise
• Video Analytics Servers
• Wireless Headsets, Keyboard, and Mice

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Part Name(s) : 74LV221A LV221A SN74LV221ANS SN54LV221A SN74LV221A SN74LV221AD SN74LV221ADBR SN74LV221ADBRE4 SN74LV221ADBRG4 SN74LV221ADE4 SN74LV221ADG4 SN74LV221ADGVR SN74LV221ADGVRE4 SN74LV221ADGVRG4 SN74LV221ADR SN74LV221ADRE4 SN74LV221ADRG4 SN74LV221ANSR SN74LV221ANSRE4 SN74LV221ANSRG4 SN74LV221APW SN74LV221APWE4 SN74LV221APWG4 SN74LV221APWR SN74LV221APWRE4 TI
Texas Instruments
Description : DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

description/ordering information
The ’LV221A devices are dual MULTIVIBRATORS designed for 2-V to 5.5-V VCC operation. Each multivibrator has a negative-transition-triggered (A) input and a positive-transition-triggered (B) input, either of which can be used as an inhibit input.
   
● 2-V to 5.5-V VCC Operation
● Max tpd of 11 ns at 5 V
● Support Mixed-Mode Voltage Operation on
    All Ports
SCHMITT-TRIGGER Circuitry on A, B, and CLR
    INPUTS for Slow Input Transition Rates
● Overriding Clear Terminates Output Pulse
● Glitch-Free Power-Up Reset on Outputs
● Ioff Supports Partial-Power-Down Mode
    Operation
● Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
● ESD Protection Exceeds JESD 22
    − 2000-V Human-Body Model (A114-A)
    − 200-V Machine Model (A115-A)
    − 1000-V Charged-Device Model (C101)
   

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Part Name(s) : 74221 74HC221 74HC221A 74HC221AM MM74HC221 MM74HC221A MM74HC221AM MM74HC221AMTC MM74HC221AMX MM74HC221AN MM74HC221ASJ MM74HC221ASJX MM74HC221CW Fairchild
Fairchild Semiconductor
Description : Dual MONOSTABLE MULTIVIBRATORS (WITH Schmitt Trigger Input)

The MM74HC221A high speed MONOSTABLE MULTIVIBRATORS (one shots) utilize advanced silicon-gate CMOS technology. They feature speeds comparable to low power Schottky TTL circuitry while retaining the low power and high noise immunity characteristic of CMOS circuits.

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Part Name(s) : 74221 74HC221 74HC221D 74HC221DB 74HC221N 74HCT221 74HCT221D 74HCT221N Philips
Philips Electronics
Description : Dual MONOSTABLE MULTIVIBRATORS (WITH Schmitt Trigger Input)

The 74HC/HCT221 are high-speed Si-gate CMOS devices and are pin compatible WITH low power Schottky TTL (LSTTL). They are specified in compliance WITH JEDEC standard no. 7A.

The 74HC/HCT221 are dual non-retriggerable MONOSTABLE MULTIVIBRATORS. Each multivibrator features an active LOW-going edge input (nA) and an active HIGH-going edge input (nB), either of which can be used as an enable input.

 

1. Pulse width variance is typically less than±5%
2. Pin-out identical to “123”
3. Overriding reset terminates output pulse
4. nB INPUTS have hysteresis for improved noise immunity
5. Output capability: standard (except for nREXT/CEXT)
6. ICCcategory: MSI

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Part Name(s) : SN74LV123A-Q1 SN74LV123ATPWRG4Q1 SN74LV123ATPWRQ1 TI
Texas Instruments
Description : Dual Retriggerable MONOSTABLE Multivibrator WITH SCHMITT-TRIGGER INPUTS

Description
The SN74LV123A-Q1 device is a dual retriggerable MONOSTABLE multivibrator designed for 2-V to 5.5-V VCC operation.

Features
• Qualified for Automotive Applications
• Typical VOLP (Output Ground Bounce)
   <0.8 V at VCC = 3.3 V, TA = 25°C
• Typical VOHV (Output VOH Undershoot)
   >2.3 V at VCC = 3.3 V, TA = 25°C
• Supports Mixed-Mode Voltage Operation on All Ports
SCHMITT-TRIGGER Circuitry on A, B, and CLR INPUTS for Slow Input Transition Rates
• Edge Triggered From Active-High or Active-Low Gated Logic INPUTS
• Ioff Supports Partial-Power-Down Mode Operation
• Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle
• Overriding Clear Terminates Output Pulse
• Glitch-Free Power-Up Reset on Outputs
• ESD Protection Exceeds JESD 22
   – 2000-V Human-Body Model (A114-A)
   – 1000-V Charged-Device Model (C101)

Applications
• Automotive
• Infotainment Systems
• DVD and Blu-ray Players
• GPS Navigation Devices
• Advanced Driver Assistance Systems
• Automotive Body and Lighting

 

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