Datasheet

SCAN921025H, SCAN921226H
SNLS185C –OCTOBER 2004–REVISED MAY 2013 www.ti.com
SCAN Circuitry Timing Requirements
Symbol Parameter Conditions Min Typ Max Units
f
MAX
Maximum TCK Clock
25.0 50.0 MHz
Frequency
t
S
TDI to TCK, H or L 1.0 ns
t
H
TDI to TCK, H or L 2.0 ns
t
S
TMS to TCK, H or L 2.5 ns
R
L
= 500Ω, C
L
= 35 pF
t
H
TMS to TCK, H or L 1.5 ns
t
W
TCK Pulse Width, H or L 10.0 ns
t
W
TRST Pulse Width, L 2.5 ns
t
REC
Recovery Time, TRST to
2.0 ns
TCK
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