IC 74393 (Dual 4-bit Binary Ripple Counter)
BD 1.400
The Harris CD74HC393 and CD74HCT393 are 4-stage ripple-carry binary counters. Al counter stages are master- slave flip-flops. The state of the stage advances one count on the negative transition of each clock pulse; a high voltage level on the MR line resets all counters to their zero state. All inputs and outputs are buffered.
Features
1. Fully Static Operation.
2. Buffered Inputs.
3. Common Reset.
4. Negative-Edge Clocking.
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Product Details
Features and benefits
• Wide supply voltage range from 2.0 V to 6.0 V
• CMOS low power dissipation
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Complies with JEDEC standards:
• JESD8C (2.7 V to 3.6 V)
• JESD7A (2.0 V to 6.0 V)
• Input levels:
• For 74HC393: CMOS level
• For 74HCT393: TTL level
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V.
• Two 4-bit binary counters with individual clocks
• Divide by any binary module up to 28 in one package
• Two master resets to clear each 4-bit counter individually