M74HC390B1R STMicroelectronics, M74HC390B1R Datasheet - Page 3

• Manufacturer Part Number: M74HC390B1R
• Description: IC DECADE COUNTER DUAL 16-DIP
• Manufacturer: STMicroelectronics
• Series: 74HCr

Specifications of M74HC390B1R

• Logic Type: Counter, Decade
• Direction: Up
• Number Of Elements: 2
• Number Of Bits Per Element: 4
• Reset: Asynchronous
• Timing: Synchronous
• Count Rate: 79MHz
• Trigger Type: Negative Edge
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Counter Type: Decade
• Counting Sequence: Up
• Number Of Circuits: 2
• Logic Family: 74HC
• Propagation Delay Time: 280 ns, 56 ns, 48 ns
• Supply Voltage (max): 6 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Function: Dual Decade Counter
• Mounting Style: Through Hole
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7370-5; M74HC390B1R

M74HC390
1
1.1
1.2
Pin settings
Pin connection
Figure 1.
Pin description
Table 1. Pin description
13, 11, 10, 9 2QA to 2QD Flip flop outputs
3, 5, 6, 7
Pin N°
1, 15
2, 14
4, 12
16
8
Pin connection (top through view)
1QA to 1QD Flip flop outputs
1 CLOCK A
2 CLOCK B
1 CLOCK A
2 CLOCK B
1 CLEAR
2 CLEAR
Symbol
GND
Vcc
Clock input divide by 2 section (HIGH to LOW Edge-Triggered)
Asynchronous master reset inputs
Clock input divide by 5 section (HIGH to LOW Edge-Triggered)
Ground (0V)
Positive supply voltage
Name and function
Pin settings
3/17