HD74LS148 Datasheet, PDF (1/6 Pages) Hitachi Semiconductor – 8-line-to-3-line Octal Priority Encoders

HD74LS148
8-line-to-3-line Octal Priority Encoder
REJ03D0437–0200
Rev.2.00
Feb.18.2005
The HD74LS148 encodes eight data lines to three-line (4-2-1) binary (octal). Cascading circuitry (enable input EI and
enable output EO) has been provided to allow octal expansion without the need for external circuitry. The data inputs
and outputs are active at the low logic level.
Features
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74LS148P
DILP-16 pin
PRDP0016AE-B
P
(DP-16FV)
HD74LS148FPEL SOP-16 pin (JEITA)
PRSP0016DH-B
(FP-16DAV)
FP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
Pin Arrangement
41
52
Inputs 6 3
74
EI ⁵
A2 ⁶
Outputs
A1 ⁷
GND 8
4
5
EO
6
GS
7
3
EI
2
A2
1
A1
0
A0
16 V_CC
15 _EO
Outputs
14 _GS
13 ₃
12 ₂
11 ₁
Inputs
10 ₀
9 _{A0 Outputs}
(Top view)
Rev.2.00, Feb.18.2005, page 1 of 5