Datasheet Details
| Part number | 74191 |
|---|---|
| Manufacturer | SGS-THOMSON |
| File Size | 296.86 KB |
| Description | 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| Datasheet | 74191 74191-SGS Datasheet (PDF) |
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Overview: 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 = IOL = 4 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH = tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V .
This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | 74191 |
|---|---|
| Manufacturer | SGS-THOMSON |
| File Size | 296.86 KB |
| Description | 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| Datasheet | 74191 74191-SGS Datasheet (PDF) |
|
|
|
The M54/74HC190/191 are high speed CMOS 4-BIT SYNCHRONOUS UP/DOWN COUNTERS fabricated in silicon gate C2MOS technology.
They have the same high speed performance of LSTTL combined with true CMOS low power consumption.
State changes of the counter are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
| Brand Logo | Part Number | Description | Manufacturer |
|---|---|---|---|
 |
74191 | Synchronous 4-Bit Up/Down Counter | Fairchild Semiconductor |
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74191 | Synchronous Up/Down 4-Bit Binary Counter | National Semiconductor |
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74191 | Synchronous Up/Down Counters | Texas Instruments |
| Part Number | Description |
|---|---|
| 74190 | 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| 74160 | SYNCHRONOUS PRESETTABLE 4-BIT COUNTER |
| 74161 | SYNCHRONOUS PRESETTABLE 4-BIT COUNTER |
| 74162 | SYNCHRONOUS PRESETTABLE 4-BIT COUNTER |
| 74163 | SYNCHRONOUS PRESETTABLE 4-BIT COUNTER |