Datasheet

SN74VMEH22501
LVTTL-TO-ETL 8-BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1-BIT BUS
TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3-STATE OUTPUTS
SCES357A – JULY 2001 – REVISED SEPTEMBER 2001
6–13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
skew characteristics for UBT for specific worst-case V
CC
and temperature within the
recommended ranges of supply voltage and operating free-air temperature (see Figures 1 and 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN TYP
†
MAX UNIT
t
sk(LH)
t
sk(HL)
3A 3B ns
t
sk(LH)
t
sk(HL)
CLKAB 3B ns
t
sk(LH)
t
sk(HL)
3B 3A ns
t
sk(LH)
t
sk(HL)
CLKBA 3A ns
3A 3B
CLKAB 3B
t
sk(t)
‡
3B 3A
ns
CLKBA 3A
3A 3B
CLKAB 3B
t
sk(pp)
3B 3A
ns
CLKBA 3A
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
t
sk(t)
– Output-to-output skew is defined as the absolute value of the difference between the actual propagation delay for all outputs of the same
packaged device. The specifications are given for specific worst-case V
CC
and temperature and apply to any outputs switching in opposite
directions, both low to high (LH) and high to low (HL) [t
sk(t)
].
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