Datasheet

74HC_HCT7540 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 4 — 31 December 2012 2 of 16
NXP Semiconductors
74HC7540; 74HCT7540
Octal Schmitt trigger buffer/line driver; 3-state; inverting
4. Functional diagram
5. Pinning information
5.1 Pinning
Fig 1. Logic symbol Fig 2. IEC logic symbol

<
<
<
<
<
<
<
<







DDD
$
$
$
$
$
$
$
$








2(
2(


DDD

 (1









Fig 3. Pin configuration DIP20, SO20 Fig 4. Pin configuration SSOP20
DDD
2(

$

2(
$

<
$

<
$

<
$

<
$

<
$

<
$

<
*1
'
<
















9
&&




+&
+&7
DDD
2( 9
&&
$ 2(
$
 <
$
 <
$
 <
$
 <
$
 <
$
 <
$
 <
*1' <




















+&
+&7