Datasheet

CD54AC138, CD74AC138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCHS328A – JANUARY 2003 – REVISED FEBRUARY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS V
CC
T
A
= 25°C
–55°C to
125°C
–40°C to
85°C
UNIT
CC
MIN MAX MIN MAX MIN MAX
1.5 V 1.4 1.4 1.4
I
OH
= –50 µA
3 V 2.9 2.9 2.9
4.5 V 4.4 4.4 4.4
V
OH
V
I
= V
IH
or V
IL
I
OH
= –4 mA 3 V 2.58 2.4 2.48
V
I
OH
= –24 mA 4.5 V 3.94 3.7 3.8
I
OH
= –50 mA
†
5.5 V 3.85
I
OH
= –75 mA
†
5.5 V 3.85
1.5 V 0.1 0.1 0.1
I
OL
= 50 µA
3 V 0.1 0.1 0.1
4.5 V 0.1 0.1 0.1
V
OL
V
I
= V
IH
or V
IL
I
OL
= 12 mA 3 V 0.36 0.5 0.44
V
I
OL
= 24 mA 4.5 V 0.36 0.5 0.44
I
OL
= 50 mA
†
5.5 V 1.65 –
I
OL
= 75 mA
†
5.5 V 1.65
I
I
V
I
= V
CC
or GND 5.5 V ±0.1 ±1 ±1 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 8 160 80 µA
C
i
10 10 10 pF
†
Test one output at a time, not exceeding 1-second duration. Measurement is made by forcing indicated current and measuring voltage to minimize
power dissipation. Test verifies a minimum 50-Ω transmission-line drive capability at 85°C and 75-Ω transmission-line drive capability at 125°C.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 1.5 V, C
L
= 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
–55°C to
125°C
–40°C to
85°C
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX
t
PLH
ABC
Any Y
138 125
ns
t
PHL
A
,
B
,
C
Any
Y
138 125
ns
t
PLH
G1
Any Y
138 125
ns
t
PHL
G1
Any
Y
138 125
ns
t
PLH
G2A G2B
Any Y
125 114
ns
t
PHL
G2A
,
G2B
Any
Y
125 114
ns