Details

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BUY 74HC423N,652 https://www.utsource.net/itm/p/12609492.html

Parameter	74HC423N (Dual 4-Bit Binary Up/Down Counters)	74HC652 (16-Bit Parallel In/Out Register with 3-State Outputs)
Function	Dual 4-bit binary up/down counters	16-bit parallel in/out register with 3-state outputs
Supply Voltage (Vcc)	2.0 V to 6.0 V	2.0 V to 6.0 V
Input Voltage (VIH)	0.7 × Vcc	0.7 × Vcc
Input Voltage (VIL)	0.3 × Vcc	0.3 × Vcc
Output Voltage (VOH)	Vcc - 0.25 V	Vcc - 0.25 V
Output Voltage (VOL)	0.25 V	0.25 V
Propagation Delay (tpd)	18 ns (max at 4.5 V, 25°C)	25 ns (max at 4.5 V, 25°C)
Operating Temperature	-40°C to +85°C	-40°C to +85°C
Storage Temperature	-65°C to +150°C	-65°C to +150°C
Power Dissipation	100 mW (max at 25°C)	150 mW (max at 25°C)
Package	DIP-16, SOIC-16	DIP-24, SOIC-24

Instructions for 74HC423N:

1. Power Supply: Connect Vcc to the positive supply and GND to the ground.
2. Clock Input (CP): Apply the clock signal to the CP pin to increment or decrement the count.
3. Count Direction (UP/DOWN): Set the UP/DOWN pin high for counting up and low for counting down.
4. Reset (MR): Set the MR pin high to reset the counter to zero.
5. Output Enable (OE): Set the OE pin high to enable the output.
6. Cascade Operation: Connect the carry-out (CO) of one counter to the carry-in (CI) of the next counter for cascading.

Instructions for 74HC652:

1. Power Supply: Connect Vcc to the positive supply and GND to the ground.
2. Data Inputs (D0-D15): Connect the data inputs to the respective pins for parallel loading.
3. Data Outputs (Q0-Q15): Connect the data outputs to the respective pins for reading the register contents.
4. Output Enable (OE): Set the OE pin low to enable the outputs; high to tristate the outputs.
5. Write Enable (WE): Set the WE pin low to write data to the register.
6. Chip Select (CS): Set the CS pin low to select the chip.
7. Clock Input (CLK): Apply the clock signal to the CLK pin to synchronize data operations.
8. Reset (RST): Set the RST pin high to reset the register to zero.

Note: Always refer to the specific datasheet for detailed timing diagrams and additional information.

(For reference only)