SN54LS299 데이터 시트보기 (PDF) - Motorola => Freescale

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SN54LS299

8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS

Motorola => Freescale 

SN54 / 74LS299

3-STATE WAVEFORMS

VIN

1.3 V

tPLH

VOUT

1.3 V

Figure 1

1.3 V

tPHL

1.3 V

VIN

1.3 V

tPLH

VOUT

1.3 V

1.3 V

tPHL

1.3 V

Figure 2

VE

VE

VOUT

1.5 V

tPZL

1.5 V

Figure 3

1.5 V

tPLZ

≈ 1.5 V

0.5 V

VOL

VE

VE

tPZH

VOUT

1.5 V

tPHZ

1.5 V

1.5 V

≥ VOH

≈ 1.5 V

0.5 V

Figure 4

AC LOAD CIRCUIT

TO OUTPUT

UNDER TEST

VCC

RL

SW1

5 kΩ

CL*

SW2

SWITCH POSITIONS

SYMBOL

tPZH

tPZL

tPLZ

tPHZ

SW1

Open

Closed

Closed

Closed

SW2

Closed

Open

Closed

Closed

* Includes Jig and Probe Capacitance.

Figure 5

FAST AND LS TTL DATA

5-483

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