MM74C925N 4-Digit Counters with Multiplexed microcontroller chip
General Description :
The MM74C925, MM74C926, MM74C927 and MM74C928 CMOS counters consist of a 4-digit counter, an internal
output latch, NPN output sourcing drivers for a 7-segment display, and an internal multiplexing circuitry with four
multiplexing outputs. The multiplexing circuit has its own free-running oscillator, and requires no external clock.
The counters advance on negative edge of clock. A HIGH signal on the Reset input will reset the counter to zero,
and reset the carry-out LOW. A LOW signal on the Latch Enable input will latch the number in the counters into the
internal output latches. A HIGH signal on Display Select input will select the number in the counter to be displayed;
a LOW level signal on the Display Select will select the number in the output latch to be displayed.
The MM74C925 is a 4-decade counter and has Latch Enable, Clock and Reset inputs.
The MM74C926 is like the MM74C925 except that it has a display select and a carry-out used for cascading counters.
The carry-out signal goes HIGH at 6000, goes back LOW at 0000.
The MM74C927 is like the MM74C926 except the second most significant digit divides by 6 rather than 10.
Thus, if the clock input frequency is 10 Hz, the display would read tenths of seconds and minutes (i.e., 9:59.9).
The MM74C928 is like the MM74C926 except the most significant digit divides by 2 rather than 10 and the carry-out is
an overflow indicator which is HIGH at 2000, and it goes back LOW only when the counter is reset. Thus, this is a 3½-digit counter.
Features :
■ Wide supply voltage range: 3V to 6V
■ Guaranteed noise margin: 1V
■ High noise immunity: 0.45 VCC (typ.)
■ High segment sourcing current: 40 mA
@ VCC − 1.6V, VCC = 5V
■ Internal multiplexing circuitry
Ordering Code:
Order Number/Package Number/ Package Description
MM74C925N / N16E / 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
MM74C926N / N18A / 18-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
MM74C927N / N18A / 18-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
MM74C928N / N18A / 18-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Our Advantages :
| Part Number |
MM74C925N |
| Date Code |
Newest |
| Manufacturer/Brand |
Fairchild |
| Lead Time |
1-3 days |
| Quality Warranty |
60-365 days |
| Unit Price |
Competitive and negotiable |
| Payment |
Paypal / TT / Trade Assurance |
| Shipment |
DHL, UPS, TNT, FedEx, EMS or Post |
| Distributor |
Shenzhen Weitaixu Capacitors Co Ltd |
| More Products |
Contact us directly or Visit Us for more Details on our Products and Services |
FAQ:
Q1. How can we know the product quality?
A1: We suggest you to order a sample.
Q2. Is it the final price in the quotations?
A2: No, there still have some room for negotiation. It is depends on the order quantity you place. the more you place, the lower price you will get.
Q3. Can you offer OEM/ODM service?
A3: YES. The OEM/ODM is welcomed, we can printing any logo on the sample as your require.
Q4. How can I send inquiry?
A4: you can click “Chat Now”, or email us.
Q5. What is your payment options?
A5: We usually accept payment based on T/T, Western Union, and PayPal.
Q6. How long is your delivery time?
A6: 1-3days after receipt of the payment.
for product datasheet, CONTACT US directly
Product Tags:
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