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National Semiconductor LM322N Precision Timer IC 14-Pin DIP 1976 New
National Semiconductor LM322N Precision Timer IC 14-Pin DIP 1976 New
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$5.99 USD
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$5.99 USD
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ITEM SPECIFICS
Brand: National Semiconductor
MPN: LM322N
Model: LM322N
Type: Precision Timer
Series: LM122 / LM322
Supply Voltage: 4.5 V to 40 V
Supply Current: 2.5 mA typ / 4.5 mA max
Output: Floating transistor, 40 V / 50 mA, internally current-limited
Internal Reference: 3.15 V typ (3.0–3.3 V)
Timing Ratio Temperature Coefficient: 0.003%/°C typ
Comparator Input Current: 0.3 nA typ / 1.5 nA max
Power Dissipation: 500 mW
Operating Temperature: 0°C to +70°C
Package / Case: 14-Pin Plastic DIP (N14A)
Mounting: Through Hole
Date Code: 629 (1976, week 29)
Condition: New
DESCRIPTION
The National Semiconductor LM322N is a precision timer in a 14-pin plastic DIP. It runs from unregulated supplies of 4.5 V to 40 V and produces timing periods from microseconds to hours. Its floating-transistor output can drive loads up to 40 V and 50 mA, referred either to ground or to the supply. An internal 3.15 V regulated reference can supply up to 5 mA to external circuitry.
Features:
Timing periods from microseconds to hours
Operates from 4.5 V to 40 V supplies
Floating transistor output with internal current limiting: 40 V, 50 mA
Internal regulated 3.15 V reference, up to 5 mA available externally
Voltage-controllable timing period (VADJ)
Logic input to reverse the output sense, plus a boost function
Very low comparator input current: 0.3 nA typical
Low timing drift: 0.003%/°C typical timing-ratio temperature coefficient
Commercial temperature range: 0°C to +70°C
Markings: National Semiconductor "NS" logo, "/629" and "LM322N"
Date code 629: 1976, week 29
Unused; light handling marks on the leads
Compatibility:
Direct replacement for the National Semiconductor LM322N. It is electrically identical to the LM122, which is the wider-temperature-range version in a metal can. The 8-pin LM3905 is a simplified version that drops the boost and VADJ functions.
Q&A
Q: What is the LM322 used for?
A: It is a precision timer for delays and timing periods from microseconds to hours. It runs from unregulated 4.5–40 V supplies and drives loads of up to 50 mA directly.
Q: How is it different from the LM122?
A: Per National, the LM322 is electrically identical to the LM122 but is specified over 0°C to +70°C.
Q: When was it made?
A: The date code 629 indicates 1976, week 29.
DISCLAIMER
Item is sold as pictured. Please review all photos carefully and compare part numbers before purchasing. Vintage stock.
LEGAL DISCLAIMER
American Industrial Parts Group is not an authorized distributor, reseller, or representative of National Semiconductor or Texas Instruments. All product names, trademarks, brands, and logos are the property of their respective owners and are used for identification purposes only. As an independent reseller, the original manufacturer warranty does not apply.
LM322N, LM322, National Semiconductor LM322N, LM122, LM3905, precision timer IC, timer IC, 14-pin DIP timer, long duration timer IC, vintage National Semiconductor, 1976 IC, obsolete timer chip, delay timer IC
Thank you for shopping with American Industrial Parts Group!
Brand: National Semiconductor
MPN: LM322N
Model: LM322N
Type: Precision Timer
Series: LM122 / LM322
Supply Voltage: 4.5 V to 40 V
Supply Current: 2.5 mA typ / 4.5 mA max
Output: Floating transistor, 40 V / 50 mA, internally current-limited
Internal Reference: 3.15 V typ (3.0–3.3 V)
Timing Ratio Temperature Coefficient: 0.003%/°C typ
Comparator Input Current: 0.3 nA typ / 1.5 nA max
Power Dissipation: 500 mW
Operating Temperature: 0°C to +70°C
Package / Case: 14-Pin Plastic DIP (N14A)
Mounting: Through Hole
Date Code: 629 (1976, week 29)
Condition: New
DESCRIPTION
The National Semiconductor LM322N is a precision timer in a 14-pin plastic DIP. It runs from unregulated supplies of 4.5 V to 40 V and produces timing periods from microseconds to hours. Its floating-transistor output can drive loads up to 40 V and 50 mA, referred either to ground or to the supply. An internal 3.15 V regulated reference can supply up to 5 mA to external circuitry.
Features:
Timing periods from microseconds to hours
Operates from 4.5 V to 40 V supplies
Floating transistor output with internal current limiting: 40 V, 50 mA
Internal regulated 3.15 V reference, up to 5 mA available externally
Voltage-controllable timing period (VADJ)
Logic input to reverse the output sense, plus a boost function
Very low comparator input current: 0.3 nA typical
Low timing drift: 0.003%/°C typical timing-ratio temperature coefficient
Commercial temperature range: 0°C to +70°C
Markings: National Semiconductor "NS" logo, "/629" and "LM322N"
Date code 629: 1976, week 29
Unused; light handling marks on the leads
Compatibility:
Direct replacement for the National Semiconductor LM322N. It is electrically identical to the LM122, which is the wider-temperature-range version in a metal can. The 8-pin LM3905 is a simplified version that drops the boost and VADJ functions.
Q&A
Q: What is the LM322 used for?
A: It is a precision timer for delays and timing periods from microseconds to hours. It runs from unregulated 4.5–40 V supplies and drives loads of up to 50 mA directly.
Q: How is it different from the LM122?
A: Per National, the LM322 is electrically identical to the LM122 but is specified over 0°C to +70°C.
Q: When was it made?
A: The date code 629 indicates 1976, week 29.
DISCLAIMER
Item is sold as pictured. Please review all photos carefully and compare part numbers before purchasing. Vintage stock.
LEGAL DISCLAIMER
American Industrial Parts Group is not an authorized distributor, reseller, or representative of National Semiconductor or Texas Instruments. All product names, trademarks, brands, and logos are the property of their respective owners and are used for identification purposes only. As an independent reseller, the original manufacturer warranty does not apply.
LM322N, LM322, National Semiconductor LM322N, LM122, LM3905, precision timer IC, timer IC, 14-pin DIP timer, long duration timer IC, vintage National Semiconductor, 1976 IC, obsolete timer chip, delay timer IC
Thank you for shopping with American Industrial Parts Group!
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