The 74HC390; 74HCT390 is a dual 4-bit decade ripple counter divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuration. If master reset inputs (1MR and 2MR) are used to simultan.
• Input levels:
• For 74HC390: CMOS level
• For 74HCT390: TTL level
• Two BCD decade or bi-quinary counters
• One device can be configured to divide-by-2, 4, 5, 10, 20, 25, 50 or 100
• Two master reset inputs to clear each decade counter individually
• Supply voltage range from 4.5 V to 5.5 V
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Complies with JEDEC standard JESD7A (4.5 V to 5.5 V)
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
• Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3. Ordering inf.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | 74HCT390 |
Philips |
Dual decade ripple counter | |
2 | 74HCT390 |
nexperia |
Dual decade ripple counter | |
3 | 74HCT390 |
Texas Instruments |
Dual Decade Ripple Counter | |
4 | 74HCT393 |
Texas Instruments |
Dual 4-Stage Binary Counter | |
5 | 74HCT393 |
nexperia |
Dual 4-bit binary ripple counter | |
6 | 74HCT393-Q100 |
nexperia |
Dual 4-bit binary ripple counter | |
7 | 74HCT393BQ |
nexperia |
Dual 4-bit binary ripple counter | |
8 | 74HCT393D |
nexperia |
Dual 4-bit binary ripple counter | |
9 | 74HCT393PW |
nexperia |
Dual 4-bit binary ripple counter | |
10 | 74HCT30 |
Texas Instruments |
8-Input NAND Gate | |
11 | 74HCT30 |
NXP |
8-Input NAND Gate | |
12 | 74HCT30 |
nexperia |
8-input NAND gate |