SN74CBT3345

8BIT FET BUS SWITCH

SCDS027I − MAY 1995 − REVISED JANUARY 2004

3

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = −18 mA

−1.2

V

II

All inputs

VCC = 5.5 V,

VI = 5.5 V or GND

±1

µA

ICC

VCC = 5.5 V,

IO = 0,

VI = VCC or GND

50

µA

∆ICC‡

Control inputs

VCC = 5.5 V,

One input at 3.4 V,

Other inputs at VCC or GND

3.5

mA

Ci

Control inputs

VI = 3 V or 0

3

pF

Cio(OFF)

VO = 3 V or 0,

OE = VCC or OE = GND

6

pF

VI = 0

II = 64 mA

5

7

ron§

VCC = 4.5 V

VI = 0

II = 30 mA

5

7

Ω

ron

VCC = 4.5 V

VI = 2.4 V,

II = 15 mA

10

15

† All typical values are at VCC = 5 V, TA = 25°C.

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

§ Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by

the lower of the voltages of the two (A or B) terminals.

(unless otherwise noted) (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V

± 0.5 V

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

MAX

UNIT

tpd¶

A or B

B or A

0.25

ns

ten

OE or OE

A or B

1

9.1

ns

tdis

OE or OE

A or B

1

8.7

ns

¶ The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when

driven by an ideal voltage source (zero output impedance).