SN54LVC646A, SN74LVC646A

OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCAS302G – JANUARY 1993 – REVISED JUNE1998

7

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

V

SN54LVC646A

SN74LVC646A

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

IOH = 100 µA

1.65 V to 3.6 V

VCC–0.2

IOH = –100 µA

2.7 V to 3.6 V

VCC–0.2

IOH = –4 mA

1.65 V

1.2

VOH

IOH = –8 mA

2.3 V

1.7

V

IOH =12 mA

2.7 V

2.2

2.2

IOH = –12 mA

3 V

2.4

2.4

IOH = –24 mA

3 V

2.2

2.2

IOL = 100 µA

1.65 V to 3.6 V

0.2

IOL = 100 µA

2.7 V to 3.6 V

0.2

VOL

IOL = 4 mA

1.65 V

0.45

V

VOL

IOL = 8 mA

2.3 V

0.7

V

IOL = 12 mA

2.7 V

0.4

0.4

IOL = 24 mA

3 V

0.55

0.55

II

Control inputs

VI = 0 to 5.5 V

3.6 V

±5

±5

µA

Ioff

VI or VO = 5.5 V

0

±10

µA

IOZ‡

VO = 0 to 5.5 V

3.6 V

±15

±10

µA

ICC

VI = VCC or GND

IO =0

36 V

10

10

µA

ICC

3.6 V

≤ VI ≤ 5.5 V§

IO = 0

3.6 V

10

10

µA

∆ICC

One input at VCC – 0.6 V,

Other inputs at

VCC or GND

2.7 V to 3.6 V

500

500

µA

Ci

Control inputs

VI = VCC or GND

3.3 V

4.5

4.5

pF

Cio

A or B ports

VO = VCC or GND

3.3 V

7.5

7.5

pF

† All typical values are at VCC = 3.3 V, TA = 25°C.

‡ For I/O ports, the parameter IOZ includes the input leakage current.

§ This applies in the disabled state only.

timing requirements over recommended operating free-air temperature range (unless otherwise

noted) (see Figure 4)

SN54LVC646A

VCC = 2.7 V

VCC = 3.3 V

± 0.3 V

UNIT

MIN

MAX

MIN

MAX

fclock

Clock frequency

150

150

MHz

tw

Pulse duration

3.3

3.3

ns

tsu

Setup time, data before CLK

↑

1.6

1.5

ns

th

Hold time, data after CLK

↑

1.7

1.7

ns