Parameter

Conditions

Min

Typ

Max

Unit

DATA LOAD

Sense

Internally Pulled High (100 k

Ω)

150

300

ns

Data to be Loaded into the

Counters from the Data Lines

BUSY

3

Sense

Logic HI When Position O/P

Changing

Width

200

600

ns

Load

Use Additional Pull-Up

1

LSTTL

DIRECTION

3

Sense

Logic HI Counting Up

Logic LO Counting Down

Max Load

3

LSTTL

RIPPLE CLOCK

3

Sense

Logic HI

All 1s to All 0s

All 0s to All 1s

Width

Dependent on Input Velocity

300

Reset

Before Next Busy

Load

3

LSTTL

DIGITAL INPUTS

INHIBIT, ENABLE

2.0

V

DB1–DB16, Byte Select

±V

±10.8 V, V

INHIBIT, ENABLE

0.8

V

DB1–DB16, Byte Select

±V

±13.2 V, V

DIGITAL INPUTS

INHIBIT, ENABLE

100

µA

DB1–DB16

±V

±13.2 V , V

INHIBIT, ENABLE

100

µA

DB1–DB16, Byte Select

±V

±13.2 V, V

DIGITAL INPUTS

ENABLE = HI

1.0

V

SC1, SC2, Data Load

±V

±12.0 V, V

ENABLE = HI

–400

µA

SC1, SC2, Data Load

±V

±12.0 V, V

DIGITAL OUTPUTS

DB1–DB16

2.4

V

RIPPLE CLK, DIR

±V

±12.0 V, V

µA

DB1–DB16

0.4

V

RIPPLE CLK, DIR

±V

±12.0 V, V

THREE-STATE LEAKAGE

DB1–DB16 Only

±V

±12.0 V, V

±100

µA

±V

±12.0 V, V

±100

µA

NOTES

Specifications subject to change without notice.

All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test.

AD2S80A

REV. B

–3–