74HC245; 74HCT245
Philips Semiconductors
Octal bus tranceiver; 3-state
Table 3:
Symbol
B1
Pin description …continued
Pin
17
18
19
20
Description
data input/output
data input/output
B0
OE
output enable input (active LOW)
supply voltage
VCC
7. Functional description
7.1 Function table
Table 4:
Function table[1]
Input
OE
L
Input/output
DIR
L
An
Bn
A = B
input
Z
input
B = A
Z
L
H
H
X
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8. Limiting values
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Max Unit
VCC
IIK
supply voltage
−0.5 +7
V
input diode current
output diode current
VI < −0.5 V or VI > VCC + 0.5 V
-
-
±20
mA
mA
IOK
VO < −0.5 V or
VO > VCC + 0.5 V
±20
±35
±70
IO
output source or sink
current
VO = −0.5 V to VCC + 0.5 V
-
mA
ICC, IGND VCC or GND current
-
mA
Tstg
Ptot
storage temperature
total power dissipation
DIP20 package
−65
+150 °C
[1]
-
-
750
500
mW
mW
SO20, SSOP20,
TSSOP20 and
DHVQFN20 packages
[1] For DIP20 packages: above 70 °C, Ptot derates linearly with 12 mW/K.
For SO20 packages: above 70 °C, Ptot derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 °C, Ptot derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 °C, Ptot derates linearly with 4.5 mW/K.
9397 750 14502
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
5 of 22
NXP [ NXP ]
