74HC245 Datasheet, PDF (5/22 Pages) NXP Semiconductors – Octal bus transceiver; 3-state

Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Table 3:
Symbol
B1
B0
OE
V_CC
Pin description …continued
Pin
Description
17
data input/output
18
data input/output
19
output enable input (active LOW)
20
supply voltage
7. Functional description
7.1 Function table
Table 4:
Input
OE
L
L
H
Function table ^[1]
DIR
L
H
X
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8. Limiting values
Input/output
An
A=B
input
Z
Bn
input
B=A
Z
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
V_CC
supply voltage
−0.5 +7 V
I_IK
input diode current
V_I < −0.5 V or V_I > V_CC + 0.5 V
-
±20 mA
I_OK
output diode current
V_O < −0.5 V or
V_O > V_CC + 0.5 V
-
±20 mA
I_O
output source or sink
V_O = −0.5 V to V_CC + 0.5 V
current
-
±35 mA
I_CC, I_GND
T_stg
P_tot
V_CC or GND current
storage temperature
total power dissipation
-
−65
[1]
±70 mA
+150 °C
DIP20 package
-
750 mW
SO20, SSOP20,
TSSOP20 and
DHVQFN20 packages
-
500 mW
[1] For DIP20 packages: above 70 °C, P_tot derates linearly with 12 mW/K.
For SO20 packages: above 70 °C, P_tot derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 °C, P_tot derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 °C, P_tot derates linearly with 4.5 mW/K.
9397 750 14502
Product data sheet
Rev. 03 — 31 January 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
5 of 22