Dual D-type Flip-Flops (with Preset and Clear)
HD74HC73
Dual J-K Flip-Flops (with Clear)
Description
The flip-flop is edge sensitive to the clock input and change sta...
Description
HD74HC73
Dual J-K Flip-Flops (with Clear)
Description
The flip-flop is edge sensitive to the clock input and change state on the negative going transition of the clock pulse. Each flip-flop has independent, J, K, clock, and clear inputs and Q and Q outputs. Clear is independent of the clock and accomplished by a low level on the input.
Features
High Speed Operation: tpd (Clock to Q) = 18 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 2 µA max (Ta = 25°C)
Function Table
Inputs Clear L H H H H H H H L H Clock X J X L L H H X X X K X L H L H X X X Outputs Q L No change L H Toggle No change No change No change H L Q H
HD74HC73
Pin Arrangement
1CK 1 CLR 1CLR 2 1K 3 VCC 4 2CK 5 2CLR 6 2J 7 K CK J CLR Q Q J CK K Q Q
14 1J 13 1Q 12 1Q 11 GND 10 2K 9 2Q 8 2Q
(Top view)
Block Diagram
Q CK CK Q K CK CK CK CK
CLR J
CK CK CK CK
CK
2
HD74HC73
DC Characteristics
Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.5 1.35 1.8 — — — — — 0.1 0.1 0.1 0.33 0.33 ±1.0 20 µA µA I OL = 4 mA I OL = 5.2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions
VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 — 3.15 — 4.2 — — — — — — — — — — 0.5 1.5 3.15 4.2 —
VIL
2.0 4.5 6.0
1.35 — 1.8 — 1.9 4.4 5.9 4.13 5.63 — — —
Output voltage...
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