供应链
Harmonized Tariff Schedule (HTS) Code8542.39.00.60
Introduction Date1990-02-12
Lifecycle StatusObsolete (Last Updated: 8 months ago)
描述
由其分销商提供的 STMicroelectronics T74LS490D1 的描述。
Decade Counter, LS Series, Asynchronous, Negative Edge Triggered, 4-Bit, Up Direction, TTL, CDIP16
制造商别名
STMicroelectronics 在全球拥有多个品牌，分销商可将其用作替代名称。STMicroelectronics 也可称为以下名称：
- ST MICRO
- STM
- SGS
- SGS THOMSON
- INMOS
- STMICROE
- STMICROEL
- STMICR
- ST MIC
- ST MICROELECTRONIC
- SGS THOMPSON
- SESCOSEM
- STMICROELECT
- ST8
- STMICROELECTRON
- WAFERSCALE
- SGS-ATES
- ST MICROELECTRONICS SEMI
- ST/SGS
- ST MICROELECTRO
- SGST
- THOMS
- STMICROELE
- WAFERSCALE INTEGRATION INC
- SGS-Thomson Microelectronics
- ST Microeletronics
技术规格
Physical
Body MaterialCeramic
Case/PackageDIP
Number of Terminals16
Technical
Clock Edge Trigger TypeNegative Edge
DirectionUp
Frequency25 MHz
Load Capacitance15 pF
Low Level Output Current8 mA
Max Operating Temperature70 °C
Max Supply Current30 mA
Max Supply Voltage5.25 V
Min Operating Temperature0 °C
Min Supply Voltage4.75 V
Nominal Supply Voltage (DC)5 V
Number of Bits4
Number of Circuits2
Propagation Delay54 ns
Temperature GradeCommercial
Dimensions
Height - Seated (Max)5 mm
Length20 mm
Terminal Pitch2.54 mm
Width7.62 mm