TLC549CP 参数 Datasheet PDF下载

TLC548C, TLC548I, TLC549C, TLC549I

8-BIT ANALOG-TO-DIGITAL CONVERTERS

WITH SERIAL CONTROL

SLAS067C – NOVEMBER 1983 – REVISED SEPTEMBER 1996

PARAMETER MEASUREMENT INFORMATION

1.4 V

VCC

3 kΩ

Output

Under Test

CL

(see Note A)

See Note B

LOAD CIRCUIT FOR

td, tr, AND tf

Test

Point

3 kΩ

Output

Under Test

CL

(see Note A)

3 kΩ

Test

Point

Output

Under Test

CL

(see Note A)

Test

Point

See Note B

LOAD CIRCUIT FOR

tPZH AND tPHZ

LOAD CIRCUIT FOR

tPZL AND tPLZ

VCC

CS

50%

50%

0V

tPZL

Output Waveform 1

(see Note C)

tPZH

50%

10%

tPHZ

50%

See Note B

VOLTAGE WAVEFORMS FOR ENABLE AND DISABLE TIMES

90%

VOH

0V

0V

tPLZ

VCC

Output Waveform 2

(see Note C)

I/O CLOCK

td

DATA OUT

0.8 V

Output

2.4 V

0.4 V

2.4 V

0.8 V

tr(bus)

tf(bus)

VOLTAGE WAVEFORMS FOR RISE AND FALL TIMES

VOLTAGE WAVEFORMS FOR DELAY TIME

NOTES: A. CL = 50 pF for TLC548 and 100 pF for TLC549; CL includes jig capacitance.

B. ten = tPZH or tPZL, tdis = tPHZ or tPLZ.

C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

Figure 1. Load Circuits and Voltage Waveforms

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