Parameter

Conditions

Min

Typ

Max

Unit

COMPLEMENT

Internally Pulled High via 100 k

Ω

No Connect for Normal Operation

DATA LOAD

Sense

Internally Pulled High via 100 k

Ω

150

300

ns

Data to be Loaded into the

Counters from the Data Lines

BUSY

6, 7

Sense

Logic HI When Position O/P Changing

Width

150

350

ns

Load

Use Additional Pull-Up (See Figure 2)

1

LSTTL

DIRECTION

6

Sense

Logic HI Counting Up

Logic LO Counting Down

Max Load

3

LSTTL

RIPPLE CLOCK

6

Sense

Logic HI

All 1s to All 0s

All 0s to All 1s

Width

Dependent on Input Velocity

300

ns

Reset

Before Next Busy

Load

3

LSTTL

DIGITAL INPUTS

INHIBIT, ENABLE

2.0

V

DB1–DB16, Byte Select

±V

±11.4 V, V

INHIBIT, ENABLE

0.8

V

DB1–DB16, Byte Select

±V

±12.6 V, V

DIGITAL INPUTS

INHIBIT, ENABLE

100

µA

DB1–DB16

±V

±12.6 V, V

INHIBIT, ENABLE

100

µA

DB1–DB16, Byte Select

±V

±12.6 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

NOTES

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

Specifications subject to change without notice.

AD2S83

–3–

REV. E