Datasheet

CY54FCT138T, CY74FCT138T
1-OF-8 DECODERS
SCCS013B – MAY 1994 – REVISED OCTOBER 2001
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ORDERING INFORMATION
T
A
PACKAGE
†
SPEED
(ns)
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QSOP – Q Tape and reel 5 CY74FCT138CTQCT FT138-3
SOIC SO
Tube 5 CY74FCT138CTSOC
FCT138C
SOIC
–
SO
Tape and reel 5 CY74FCT138CTSOCT
FCT138C
–40°C to 85°C
QSOP – Q Tape and reel 5.8 CY74FCT138ATQCT FT138-1
SOIC SO
Tube 5.8 CY74FCT138ATSOC
FCT138A
SOIC
–
SO
Tape and reel 5.8 CY74FCT138ATSOCT
FCT138A
QSOP – Q Tape and reel 9 CY74FCT138TQCT FT138
LCC – L Tube 6 CY54FCT138CTLMB
–55°C to 125°C
LCC – L Tube 12 CY54FCT138TLMB
CDIP – D Tube 12 CY54FCT138TDMB
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
OUTPUTS
E
1
E
2
E
3
A
0
A
1
A
2
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
H X X X X X H H H H H H H H
X HXXXXHHHHHHHH
X XLXXXHHHHHHHH
L L H L L L L H H H H H H H
L LHHLLHLHHHHHH
L LHLHLHHLHHHHH
L LHHHLHHHLHHHH
L L H L L H H H H H L H H H
L LHHLHHHHHHLHH
L LHLHHHHHHHHLH
L L H H H H H H H H H H H L
H = High logic level, L = Low logic level, X = Don’t care