AMD

2-27

PAL16R8B-4 (Com’l)

SWITCHING CHARACTERISTICS over COMMERCIAL operating ranges (Note 1)

Parameter

Symbol

Parameter Description

Min

Max

Unit

Input or Feedback to Combinatorial Output

16L8, 16R6,

35

ns

16R4

Setup Time from Input or Feedback to Clock

35

ns

Hold Time

0ns

Clock to Output or Feedback

16R8, 16R6,

25

ns

Clock Width

LOW

16R4

25

ns

HIGH

25

ns

Maximum

External Feedback

16

MHz

Frequency

(Note 2)

No Feedback

20

MHz

OE to Output Enable

25

ns

OE to Output Disable

25

ns

Input to Output Enable Using Product Term Control

16L8, 16R6,

35

ns

Input to Output Disable Using Product Term Control

16R4

35

ns

Notes:

1. See Switching Test Circuit for test conditions.

2. These parameters are not 100% tested, but are calculated at initial characterization and at any time the design is modified

where frequency may be affected.