CBT3244AD datasheet(4/10 Pages) PHILIPS

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Philips Semiconductors

Product data sheet

CBT3244A

Octal bus switch with quad output enables

2004 May 26

DC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb = –40 °C to +85 °C

UNIT

Min

Typ1

Max

VIK

Input clamp voltage

VCC = 4.5 V; II = –18 mA

—

–1.2

Input leakage current

VCC = 5.5 V; VI = GND or 5.5 V

—

±1

µA

ICC

Quiescent supply current

VCC = 5.5 V; IO = 0, VI = VCC or GND

—

µA

∆ICC

Additional supply current per

input pin2

VCC = 5.5 V, one input at 3.4 V, other inputs at

VCC or GND

—

2.5

Control pins input capacitance

VI= 3 V or 0 V, OE = VCC

—

CIO(OFF)

Input/output capacitance

OE = VCC = 5.0 V

—

VCC = 4.5 V; VI = 0 V; II = 64 mA

—

ron3

On-resistance

VCC = 4.5 V; VI = 0 V; II = 30 mA

—

Ω

VCC = 4.5 V; VI = 2.4 V; II = 15 mA

—

NOTES:

1. All typical values are at VCC = 5 V, Tamb = 25 °C

2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.

3. Measured by the voltage drop between the A and the B terminals at the indicated current through the switch.

On-state resistance is determined by the lowest voltage of the two (A or B) terminals.

AC CHARACTERISTICS

GND = 0 V; tR; CL = 50 pF

LIMITS

SYMBOL

PARAMETER

FROM

(INPUT)

(OUTPUT)

Tamb = –40 °C to +85 °C

VCC = +5.0 V ± 0.5 V

UNIT

Min

Max

tpd

Propagation delay1

A or B

B or A

—

.25

ten

Output enable time

to HIGH and LOW level

A or B

1.0

5.6

tdis

Output disable time

from HIGH and LOW level

A or B

1.0

6.0

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).

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