M74HC109
DESCRIPTION
The M74HC109 is an high speed CMOS DUAL J-K FLIP FLOP WITH PRESET AND CLEAR fabricated with silicon gate C2MOS technology. In accordance with the logic level on the J and K input this device changes state on positive going transition of the clock pulse. CLEAR and PRESET
TSSOP
ORDER CODES
PACKAGE
TUBE
DIP SOP TSSOP
M74HC109B1R M74HC109M1R
T&R
M74HC109RM13TR M74HC109TTR are independent of the clock and are acplished by a logic low on the corresponding input. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/12
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1,15
2, 14, 3, 13 4, 12 5, 11 6, 10 7, 9 8 16
1CLR, 2CLR
Asynchronous Reset Direct Input
1J, 2J, 1K, Synchronous Inputs;
2K
Flip-Flops 1 and 2
1CK, 2CK Clock Input
1PR, 2PR
Asynchronous Set Direct Input (Active Low)
1Q, 2Q True Flip-Flop...
