HD74AC244 Datasheet, PDF (1/9 Pages) Hitachi Semiconductor – Octal Buffer/Line Driver with 3-State Output

HD74AC244/HD74ACT244
Octal Buffer/Line Driver with 3-State Output
REJ03D0262–0200Z
(Previous ADE-205-383 (Z))
Rev.2.00
Jul.16.2004
Description
The HD74AC244/HD74ACT244 is an octal buffer and line driver designed to be employed as a memory address driver,
clock driver and bus-oriented transmitter/receive which provides improved PC board density.
Features
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Outputs Source/Sink 24 mA
• HD74ACT244 has TTL-Compatible Inputs
• Ordering Information: Ex. HD74AC244
Part Name
Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity)
HD74AC244P
DIP-20 pin
DP-20N, -20NEV P
—
HD74AC244FPEL SOP-20 pin (JEITA) FP-20DAV
FP
EL (2,000 pcs/reel)
HD74AC244RPEL SOP-20 pin (JEDEC) FP-20DBV
RP
EL (1,000 pcs/reel)
HD74AC244TELL TSSOP-20 pin
TTP-20DAV
T
ELL (2,000 pcs/reel)
Notes: 1. Please consult the sales office for the above package availability.
2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of
the package code.
Pin Arrangement
OE1 1
1A₁ 2
2Y₄ 3
1A₂ 4
2Y₃ 5
1A₃ 6
2Y_{2 7}
1A₄ 8
2Y₁ 9
GND 10
(Top view)
20 VCC
19 OE2
18 1Y₁
17 2A₄
16 1Y₂
15 2A₃
14 1Y₃
13 2A₂
12 1Y₄
11 2A₁
Rev.2.00, Jul.16.2004, page 1 of 8