Datasheet
SN54HC245, SN74HC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO
V
T
A
= 25°C SN54HC245 SN74HC245
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 40 105 160 130
t
p
d
A or B B or A
4.5 V 15 21 32 26
ns
t
pd
A
or
B
B
or
A
6 V 12 18 27 22
ns
2 V 125 230 340 290
t
en
OE A or B
4.5 V 23 46 68 58
ns
t
en
OE
A
or
B
6 V 20 39 58 49
ns
2 V 74 200 300 250
t
dis
OE A or B
4.5 V 25 40 60 50
ns
t
dis
OE
A
or
B
6 V 21 34 51 43
ns
2 V 20 60 90 75
t
t
A or B
4.5 V 8 12 18 15
ns
t
6 V 6 10 15 13
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO
V
T
A
= 25°C SN54HC245 SN74HC245
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 54 135 200 170
t
p
d
A or B B or A
4.5 V 18 27 40 34
ns
t
pd
A
or
B
B
or
A
6 V 15 23 34 29
ns
2 V 150 270 405 335
t
en
OE A or B
4.5 V 31 54 81 67
ns
t
en
OE
A
or
B
6 V 25 46 69 56
ns
2 V 45 210 315 265
t
t
A or B
4.5 V 17 42 63 53
ns
t
6 V 13 36 53 45
operating characteristics, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance per transceiver No load 40 pF