Circuitos Integrados | ||
---|---|---|
74393 |
---|
Dual 4-bit binary ripple counter |
PDF datasheet |
1CP | 1 • | 14 | Vcc |
1MR | 2 | 13 | 2CP |
1Q0 | 3 | 12 | 2MR |
1Q1 | 4 | 11 | 2Q0 |
1Q2 | 5 | 10 | 2Q1 |
1Q3 | 6 | 9 | 2Q2 |
GND | 7 | 8 | 2Q3 |
Pin | Symbol | Description |
---|---|---|
1 | 1CP | clock input (high-to-low, edge-triggered) |
2 | 1MR | asynchronous master reset (active high) |
3 | 1Q0 | flip-flop output |
4 | 1Q1 | flip-flop output |
5 | 1Q2 | flip-flop output |
6 | 1Q3 | flip-flop output |
7 | GND | ground |
8 | 2Q3 | flip-flop output |
9 | 2Q2 | flip-flop output |
10 | 2Q1 | flip-flop output |
11 | 2Q0 | flip-flop output |
12 | 2MR | asynchronous master reset (active high) |
13 | 2CP | clock input (high-to-low, edge-triggered) |
14 | Vcc | supply voltage |
Specifications |
---|
(typical values under recommended operating conditions, unless specified) |
Parameter | Value | Unit |
---|---|---|
Propagation delay, nCP to nQ0 |
12 (74HC) 20 (74HCT) |
ns |
Propagation delay, nQx to nQ(x+1) |
5 (74HC) 6 (74HCT) |
ns |
Propagation delay, nMR to nQx |
11 (74HC) 15 (74HCT) |
ns |
Maximum clock frequency |
99 (74HC) 53 (74HCT) |
MHz |
Note |
---|
Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information. |
BACK |