74HCT299U Просмотр технического описания (PDF) - Philips Electronics

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74HCT299U

8-bit universal shift register; 3-state

Philips Electronics 

Philips Semiconductors

8-bit universal shift register; 3-state

Product specification

74HC/HCT299

AC WAVEFORMS

handbook, full pagewidth

I/On ,DSR,DSL

INPUTS

VM (1)

t su

th

1/ f max

t su

th

CP INPUT

VM (1)

The shaded areas indicate when the input is

permitted to change for predictable output

performance.

(1) HC : VM = 50%; VI = GND to VCC.

HCT : VM = 1.3 V; VI = GND to 3 V.

I/On,Q 0 ,Q 7

OUTPUTS

MBA335

tW

t PHL

VM (1)

t THL

t PLH

t TLH

Fig.6 Waveforms showing the clock (CP) to output (I/On, Q0, Q7) propagation delays, the clock pulse width, the

I/On, DSR and DSL to CP set-up and hold times, the output transition times and the maximum clock

frequency.

(1) HC : VM = 50%; VI = GND to VCC.

HCT : VM = 1.3 V; VI = GND to 3 V.

Fig.7 Waveforms showing the master reset (MR) pulse width (LOW), the master reset to output (I/On, Q0, Q7)

propagation delays and the master reset to clock (CP) removal time.

December 1990

10

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