IB55 is a CMOS-level input buffer pad with pull-down.

Truth Table

PAD

A

Q

CMOS

P

D

Capacitance

A

Q

Ci (pF)

L

L

A

1.002

HH

high imp.

L

Area

Power

71.61 mils

2

6.94 µW / MHz

Delay [ns] = tpd.. = f(SL, L)

with SL = Input Slope [ns] ; L = Output Load [pF]

Output Slope [ns] = op_sl.. = f(L)

with L = Output Load [pF]

AC Characteristics :

Tj = 25°C

VDD = 3.3V

Typical Process

AC Characteristics

Characteristics

Symbol

SL = 0.1

SL = 2.0

L = 0.2

L = 1.4

L = 2.0

L = 0.2

L = 1.4

L = 2.0

Delay A to Q

tpdar

0.45

1.07

1.35

0.66

1.27

1.57

tpdaf

0.48

0.95

1.18

0.83

1.30

1.52

Output Slope A to Q

op_slar

0.61

2.43

3.40

0.63

2.43

3.32

op_slaf

0.45

1.66

2.22

0.50

1.62

2.21

Sept. 1996

- 172 -

Rev. N/C

Austria Mikro S ysteme International

R

0.6 µm CMOS

CUB

IB55

IB55