74HCT390 - nexperia

74HCT390 Dual decade ripple counter

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.

Features

• 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.