74HC244D NXP Semiconductors, 74HC244D Datasheet - Page 4

• Manufacturer Part Number: 74HC244D
• Description: Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin SO Bulk
• Manufacturer: NXP Semiconductors

Specifications of 74HC244D

• Package: 20SO
• Logic Family: HC
• Logic Function: Buffer/Line Driver
• Number Of Outputs Per Chip: 8
• Output Type: 3-State
• Input Signal Type: Single-Ended
• Maximum Propagation Delay Time @ Maximum Cl: 110@2V|22@4.5V|19@6V ns
• Polarity: Non-Inverting

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