Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
CD74HC423 Datasheet(PDF) 1 Page - Texas Instruments |
|
|
CD74HC423 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page 1 Data sheet acquired from Harris Semiconductor SCHS142 September 1997 Features • Overriding Reset Terminates Output Pulse • Triggering From the Leading or Trailing Edge • Q and Q Buffered Outputs • Separate Resets • Wide Range of Output-Pulse Widths • Schmitt Trigger on Both A and B Inputs • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD74HC123, CD74HCT123, CD74HC423, CD74HCT423 (PDIP, SOIC) TOP VIEW Description The Harris CD74HC123, CD74HCT123, CD74HC423 and CD74HCT423 are dual monostable multivibrators with resets. They are all retriggerable and differ only in that the 123 types can be triggered by a negative to positive reset pulse; whereas the 423 types do not have this feature. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of Rx and CX provides a wide range of output pulse widths from the Q and Q terminals. Pulse triggering on the A and B inputs occur at a particular voltage level and is not related to the rise and fall times of the trigger pulses. Once triggered, the output pulse width may be extended by retriggering inputs A and B. The output pulse can be terminated by a LOW level on the Reset (R) pin. Trailing edge triggering (A) and leading edge triggering (B) inputs are provided for triggering from either edge of the input pulse. If either Mono is not used each input on the unused device (A, B, and R) must be terminated high or low. The minimum value of external resistance, Rx is typically 5k Ω. The minimum value external capacitance, CX, is 0pF. The calculation for the pulse width is tW = 0.45 RXCX at VCC = 5V. 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 1A 1B 1R 1Q 2Q 2CX GND 2RXCX VCC 1CX 1Q 2Q 2R 2B 2A 1RXCX Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CD74HC123E -55 to 125 16 Ld PDIP E16.3 CD74HCT123E -55 to 125 16 Ld PDIP E16.3 CD74HC423E -55 to 125 16 Ld PDIP E16.3 CD74HCT423E -55 to 125 16 Ld PDIP E16.3 CD74HC123M -55 to 125 16 Ld SOIC M16.15 CD74HCT123M -55 to 125 16 Ld SOIC M16.15 CD74HC423M -55 to 125 16 Ld SOIC M16.15 CD74HCT423M -55 to 125 16 Ld SOIC M16.15 NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Wafer or die for this part number is available which meets all elec- trical specifications. Please contact your local sales office or Harris customer service for ordering information. CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 File Number 1708.1 CD74HC123, CD74HCT123, CD74HC423, CD74HCT423 High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets [ /Title (CD74 HC123 , CD74 HCT12 3, CD74 HC423 , CD74 HCT42 3) /Sub- ject (High Speed |
Número de pieza similar - CD74HC423 |
|
Descripción similar - CD74HC423 |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |