74HC7540D Datasheet, PDF (3/16 Pages) NXP Semiconductors – Octal Schmitt trigger buffer/line driver; 3-state; inverting Rev. 4 — 31 December 2012

NXP Semiconductors
74HC7540; 74HCT7540
Octal Schmitt trigger buffer/line driver; 3-state; inverting
5.2 Pin description
Table 2.
Symbol
OE1
A0 to A7
GND
Y0 to Y7
OE2
V_CC
Pin description
Pin
Description
1
output enable input (active LOW)
2, 3, 4, 5, 6, 7, 8, 9
data input
10
ground (0 V)
18, 17, 16, 15, 14, 13, 12, 11 data output
19
output enable input (active LOW)
20
supply voltage
6. Functional description
Table 3.
Control
OE1
L
L
X
H
Functional table^[1]
OE2
L
L
H
X
Input
An
L
H
X
X
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
Output
Yn
H
L
Z
Z
7. Limiting values
Table 4. 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
I_IK
I_OK
I_O
I_CC
I_GND
T_stg
P_tot
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
DIP20
V_I < 0.5 V or V_I > V_CC + 0.5 V
V_O < 0.5 V or V_O > V_CC + 0.5 V
0.5 V < V_O < V_CC + 0.5 V
0.5
[1] _-
[1] _-
-
-
70
65
[2]
-
+7
V
20 mA
20 mA
35 mA
70
mA
-
mA
+150 C
750 mW
SO20, SSOP20
-
500 mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP20 packages: above 70 C the value of P_tot derates linearly with 12 mW/K.
For SO20 packages: above 70 C the value of P_tot derates linearly with 8 mW/K.
For SSOP20 packages: above 60 C the value of P_tot derates linearly with 5.5 mW/K.
74HC_HCT7540
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 31 December 2012
© NXP B.V. 2012. All rights reserved.
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