74HC243 查看數據表（PDF） - NXP Semiconductors.
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74HC243 Datasheet PDF : 17 Pages
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Philips Semiconductors
6. Pinning information
6.1 Pinning
74HC243
Quad bus transceiver; 3-state
OEA 1
n.c. 2
A0 3
A1 4
A2 5
A3 6
GND 7
Fig 4. Pin configuration
14 VCC
13 OEB
12 n.c.
243
11 B0
10 B1
9 B2
8 B3
001aab948
6.2 Pin description
Table 3:
Symbol
OEA
n.c.
A0
A1
A2
A3
GND
B3
B2
B1
B0
n.c.
OEB
VCC
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
output enable input (active LOW)
not connected
data input or output
data input or output
data input or output
data input or output
ground (0 V)
data output or input
data output or input
data output or input
data output or input
not connected
output enable input
positive supply voltage
9397 750 13808
Product data sheet
Rev. 03 — 12 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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