SN74CBT3345

8-BIT FET BUS SWITCH

SCDS027D – MAY 1995 – REVISED MAY 1998

2

POST OFFICE BOX 655303

–0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous channel current

128 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

115

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DGV package

146

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DW package

97

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package

128

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51.

recommended operating conditions (see Note 3)

MIN

MAX

UNIT

VCC

Supply voltage

4.5

5.5

V

VIH

High-level control input voltage

2

V

VIL

Low-level control input voltage

0.8

V

TA

Operating free-air temperature

0

70

°C

NOTE 3: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

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

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

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.