tc74act245 TOSHIBA Semiconductor CORPORATION, tc74act245 Datasheet - Page 5

• Manufacturer Part Number: tc74act245
• Description: Octal Bus Transceiver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

AC Characteristics
Propagation delay
time
Propagation delay
time
Output enable time
Output disable time
Input capacitance
Bus input capacitance
Power dissipation
capacitance
Note 1: C
Note 2: For TC74ACT245 only
Note 3: For TC74ACT640 only
Characteristics
current consumption without load.
Average operating current can be obtained by the equation:
PD
(Note 2)
(Note 3)
I
is defined as the value of the internal equivalent capacitance which is calculated from the operating
CC (opr)
= C
Symbol
(C
t
t
t
t
t
t
t
t
C
C
C
pZH
pHZ
pLH
pHL
pLH
pHL
pZL
pLZ
PD
(Note 1) TC74ACT640
I/O
PD
IN
L
·V
= 50 pF, R
CC
·f
DIR, G
A
TC74ACT245
IN
n
, Bn
+ I
CC
L
/8 (per bit)
= 500 Ω, input: t
Test Condition
―
―
―
―
5
5.0 ± 0.5
5.0 ± 0.5
5.0 ± 0.5
5.0 ± 0.5
V
CC
r
= t
(V)
f
= 3 ns)
Min
―
―
―
―
―
―
―
―
Ta = 25°C
TC74ACT245,640P/F/FT
Typ.
5.0
5.7
7.3
6.3
13
38
43
5
Max
12.3
8.0
8.5
9.7
10
―
―
―
Min
−40 to 85°C
1.0
1.0
1.0
1.0
―
―
―
―
Ta =
2007-10-01
14.0
11.0
Max
9.0
9.5
10
―
―
―
Unit
pF
pF
pF
ns
ns
ns
ns