Philips Semiconductors

Product data

CBT16211

24-bit bus switch with 12-bit output enables

2001 Jun 13

5

AC CHARACTERISTICS

SYMBOL

PARAMETER

FROM

TO

UNIT

SYMBOL

PARAMETER

(INPUT)

(OUTPUT)

Min

Max

UNIT

A or B

B or A

—

0.25

ns

Output enable time

to High and Low level

OE

A or B

1.5

6.0

ns

Output disable time

from High and Low level

OE

A or B

1.5

6.0

ns

NOTE:

1. This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical on-state

resistance of the switch and a load capacitance of 50 pF, when driven by an ideal voltage source (zero output impedance).

AC WAVEFORMS

INPUT

1.5 V

OUTPUT

SA00028

1.5 V

1.5 V

1.5 V

3 V

0 V

Waveform 1. Input (An) to Output (Yn) Propagation Delays

Output Control

(Low-level

enabling )

1.5 V

3.5 V

0 V

SA00029

1.5 V

1.5 V

1.5 V

0 V

3 V

Output

Waveform 1

S1 at 7 V

(see Note)

Note:

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.

Output

Waveform 2

S1 at Open

(see Note)

Waveform 2. 3-State Output Enable and Disable Times

TEST CIRCUIT AND WAVEFORMS

500

Ω

Load Circuit

DEFINITIONS

Load capacitance includes jig and probe capacitance;

see AC CHARACTERISTICS for value.

TEST

S1

open

7 V

open

SA00012

500

Ω

From Output

Under Test

S1

7 V

Open

GND