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Datasheet 74191 Equivalent ( PDF ) |
| N.º | Número de pieza | Descripción | Fabricantes | |
| 4 | 74191 | 4 BIT SYNCHRONOUS UP/DOWN COUNTERS M54/M74HC190 M54/M74HC191
4 BIT SYNCHRONOUS UP/DOWN COUNTERS
. HIGH SPEED fMAX = 48 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE IOH� |
 SGS-THOMSON |
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| 3 | 74191 | Synchronous Up/Down Counters With Down/Up Mode Control |
 Texas Instruments |
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| 2 | 74191 | Synchronous 4-Bit Up/Down Counter with Mode Control DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
August 1986 Revised February 1999
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
General Description
The DM74LS191 circuit is a synchronous, reversible, up/ down counter. Synchronous operation is provided by having all fl |
 Fairchild Semiconductor |
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| 1 | 74191 | Synchronous Up/Down 4-Bit Binary Counter with Mode Control 54191 DM54191 DM74191 Synchronous Up Down 4-Bit Binary Counter with Mode Control
June 1989
54191 DM54191 DM74191 Synchronous Up Down 4-Bit Binary Counter with Mode Control
General Description
This circuit is a synchronous reversible up down counter The 191 is a 4-bit binary counter Synchronous ope |
 National Semiconductor |
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