SN74CBTR16861

20-BIT FET BUS SWITCH

SCDS078D – JULY 1998 – REVISED NOVEMBER 2001

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

VCC = 0,

VI = 5.5 V

10

µA

II

VCC = 5.5 V,

VI = 5.5 V or GND

±1

µA

ICC

VCC = 5.5 V,

IO = 0,

VI = VCC or GND

3

µA

∆ICC‡ Control inputs

VCC = 5.5 V,

One input at 3.4 V,

Other inputs at VCC or GND

2.5

mA

Ci

Control inputs

VI = 3 V or 0

3.5

pF

Cio(OFF)

VO = 3 V or 0,

OE = VCC

5

pF

§

VCC = 4 V,

TYP at VCC = 4 V

VI = 2.4 V,

II = 15 mA

20

37

50

ron§

VI =0

II = 64 mA

20

33

47

Ω

on

VCC = 4.5 V

VI = 0

II = 30 mA

20

33

47

VI = 2.4 V,

II = 15 mA

20

35

48

† All typical values are at VCC = 5 V (unless otherwise noted), 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 lowest voltage of the two (A or B) terminals.

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

otherwise noted) (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4 V

VCC = 5 V

± 0.5 V

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

tpd¶

A or B

B or A

1.25

1.25

ns

ten

OE

A or B

3.1

9

2.7

8.6

ns

tdis

OE

A or B

2.7

6.3

2.3

6.9

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).