General Description

The CD40174BC consists of six positive-edge triggered D type flip-flops; the true outputs from each flip-flop are externally available. The CD40175BC consists of four positive edge triggered D-type flip-flops; both the true and comple ment outputs from each flip-flop are externally available.

All flip-flops are controlled by a common clock and a common clear. Information at the D inputs meeting the set-up time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. The clearing operation, enabled by a negative pulse at Clear input, clears all

Q outputs to logical “0” and Qs (CD40175BC only) to logical “1”. All inputs are protected from static discharge by diode clamps to VDDand VSS.

Features

■ Wide supply voltage range: 3V to 15V

■ High noise immunity: 0.45 VDD(typ.)

■ Low power TTL compatibility: fan out of 2 driving 74L or 1 driving 74 LS

■ Equivalent to MC14174B, MC14175B

■ Equivalent to MM74C174, MM74C175