U74CBT3257L-R16-R datasheet(6/6 Pages) UTC

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U74CBT3257

Advance

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 6

www.unisonic.com.tw

QW-R502-922.A

TEST CIRCUIT AND WAVEFORMS

TEST

VCC

tR / tF

V∆

VEXT

tPLH/tPHL

VCC or GND

≤2.5ns

Open

50pF

500Ω

5V±0.5V

VCC or GND

≤2.5ns

Open

50pF

500Ω

tPLZ/tPZL

GND

≤2.5ns

0.3V

50pF

500Ω

5V±0.5V

GND

≤2.5ns

0.3V

50pF

500Ω

tPHZ/tPZH

VCC

≤2.5ns

0.3V

Open

50pF

500Ω

5V±0.5V

VCC

≤2.5ns

0.3V

Open

50pF

500Ω

PROPAGATION DELAY TIMES

ENABLE AND DISABLE TIMES

Notes: 1. CL includes probe and jig capacitance.

2. All input pulses are supplied by generators having the following characteristics: PRR≤10MHz,

ZO=50Ω, tr≤2.5ns, tf≤2.5 ns.

3. The outputs are measured one at a time with one transition per measurement.

4. tPLZ and tPHZ are the same as tdis.

5. tPZL and tPZH are the same as ten.

6. tPLH and tPHL are the same as tpd(s).

7. All parameters and waveforms are not applicable to all devices.

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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