74HC244; 74HCT244
Philips Semiconductors
Octal buffer/line driver; 3-state
6. Pinning information
6.1 Pinning
74HC244
74HCT244
terminal 1
index area
74HC244
74HCT244
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
1
2
20
19
18
17
16
15
14
13
12
11
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND
V
CC
2OE
1Y0
2A0
1Y1
2A1
1Y2
2A2
1Y3
2A3
3
4
5
6
(1)
GND
7
8
9
001aae012
10
Transparent top view
001aae011
(1) The die substrate is attached to this
pad using conductive die attach
material. It can not be used as supply
pin or input
Fig 4. Pin configuration DIP20, SO20,
SSOP20 and TSSOP20
Fig 5. Pin configuration DHVQFN20
6.2 Pin description
Table 3:
Pin description
Symbol
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND
2A3
1Y3
2A2
1Y2
Pin
1
Description
1 output enable input (active LOW)
1 data input 0
2
3
2 bus output 0
1 data input 1
4
5
2 bus output 1
1 data input 2
6
7
2 bus output 2
1 data input 3
8
9
2 bus output 3
ground (0 V)
10
11
12
13
14
2 data input 3
1 bus output 3
2 data input 2
1 bus output 2
74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
4 of 22
NXP [ NXP ]
