CD74HC194PWE4 Просмотр технического описания (PDF) - Vectron International

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CD74HC194PWE4

High-Speed CMOS Logic 4-Bit Bidirectional Universal Shift Register

Vectron International 

Test Circuits and Waveforms

INPUT LEVEL

CP

10%

Q

tr

90%

VS

tW

tf

VS

10%

tPHL

VS

tTHL

VS

GND

tPLH

90%

VS

10%

tTLH

FIGURE 1. CLOCK PREREQUISITE TIMES AND

PROPAGATION AND OUTPUT TRANSITION TIMES

MR

VS

VS

tW

tREM

VS

CP

tPHL

Q

VS

INPUT LEVEL

GND

INPUT LEVEL

GND

FIGURE 2. MASTER RESET PREREQUISITE TIMES AND

PROPAGATION DELAYS

VALID

DATA

CP

VS

tSU

tH

VS

INPUT LEVEL

GND

INPUT LEVEL

GND

FIGURE 3. DATA PREREQUISITE TIMES

S OR DS

CP

VALID

VS

tSU

tH

VS

INPUT LEVEL

GND

INPUT LEVEL

GND

FIGURE 4. PARALLEL LOAD OR SHIFT-LEFT/SHIFT-RIGHT

PREREQUISITE TIMES

7

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