SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
Copyright
©
1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
•
3-State Versions of SN54F153 and
SN74F153
•
Permits Multiplexing From N Lines to
One Line
•
Performs Parallel-to-Serial Conversion
•
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These data selectors/multiplexers contain
inverters and drivers to supply full binary decoding
data selection to the AND-OR gates. Separate
output-control inputs are provided for each of the
two 4-line sections.
The 3-state outputs can interface with and drive
data lines of bus-organized systems. With all but
one of the common outputs disabled (at a
high-impedance state), the low impedance of the
single enabled output will drive the bus line to a
high or low logic level. Each output has its own
strobe (G) inputs. The output is disabled when its
strobe is high.
The SN54F253 is characterized for operation over
the full military temperature range of – 55
°
C to
125
°
C. The SN74F253 is characterized for
operation from 0
°
C to 70
°
C.
FUNCTION TABLE
INPUTS
STROBE
OUTPUT
SELECT
DATA
STROBE
G
OUTPUT
Y
B
A
C0
C1
C2
C3
G
Y
X
X
X
X
X
X
H
Z
L
L
L
X
X
X
L
L
L
L
H
X
X
X
L
H
L
H
X
L
X
X
L
L
L
H
X
H
X
X
L
H
H
L
X
X
L
X
L
L
H
L
X
X
H
X
L
H
H
H
X
X
X
L
L
L
H
H
X
X
X
H
L
H
Select inputs A and B are common to both sections.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1G
B
1C3
1C2
1C1
1C0
1Y
GND
V
CC
2G
A
2C3
2C2
2C1
2C0
2Y
SN54F253 . . . J PACKAGE
SN74F253 . . . D OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
A
2C3
NC
2C2
2C1
1C3
1C2
NC
1C1
1C0
SN54F253 . . . FK PACKAGE
(TOP VIEW)
B
1G
NC
2Y
2C0
2G
1Y
GND
NC
NC – No internal connection
V
CC
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
2–2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
logic symbol
†
G
MUX
0
3
0
14
A
1
2
B
EN
1
15
1Y
7
0
6
1C0
1
5
1C1
2
4
1C2
3
3
1C3
10
2C0
11
2C1
12
2C2
13
2C3
2Y
9
1G
2G
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
logic diagram (positive logic)
Data 2
Select
Data 1
2G
2C3
2C2
2C1
2C0
A
B
1C3
1C2
1C1
1C0
1G
2Y
1Y
1
6
5
4
3
2
14
10
11
12
13
15
7
9
Pin numbers shown are for the D, J, and N packages.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
2–4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
– 0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range (see Note 1)
– 1.2 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current range
– 30 mA to 5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state
– 0.5 V to 5.5 V
. . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state
– 0.5 V to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state: SN54F253
40 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74F253
48 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range:
SN54F253
– 55
°
C to 125
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74F253
0
°
C to 70
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F253
SN74F253
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IIK
Input clamp current
– 18
– 18
mA
IOH
High-level output current
– 3
– 3
mA
IOL
Low-level output current
20
24
mA
TA
Operating free-air temperature
– 55
125
0
70
°
C
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
2–5
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F253
SN74F253
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.2
– 1.2
V
VCC = 4 5 V
IOH = – 1 mA
2.5
3.4
2.5
3.4
VOH
VCC = 4.5 V
IOH = – 3 mA
2.4
3.3
2.4
3.3
V
VCC = 4.75 V,
IOH = – 1 mA to – 3 mA
2.7
VOL
VCC = 4 5 V
IOL = 20 mA
0.3
0.5
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
50
µ
A
IOZL
VCC = 5.5 V,
VO = 0.5 V
– 50
– 50
µ
A
II
VCC = 5.5 V,
VI = 7 V
0.1
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
µ
A
IIL
VCC = 5.5 V,
VI = 0.5 V
– 0.6
– 0.6
mA
IOS‡
VCC = 5.5 V,
VO = 0
– 60
–150
– 60
–150
mA
ICCH
V
5 5 V
Condition A
11.5
16
11.5
16
ICCL
VCC = 5.5 V,
See Note 2
Condition B
16
23
16
23
mA
ICCZ
See Note 2
Condition C
16
23
16
23
† All typical values are at VCC = 5 V, TA = 25
°
C.
‡ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 2: ICC is measured with the outputs open under the following conditions:
A. Inputs A, B, 1C3, and 2C3 at 4.5 V, other inputs grounded
B. All inputs grounded
C. Inputs 1G and 2G at 4.5 V, other inputs grounded
switching characteristics (see Note 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
R1 = 500
Ω
,
R2 = 500
Ω
,
TA = 25
°
C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
Ω
,
R2 = 500
Ω
,
TA = MIN to MAX§
UNIT
′
F253
SN54F253
SN74F253
MIN
TYP
MAX
MIN
MAX
MIN
MAX
tPLH
A or B
Any Y
3.7
8.1
11.5
2.7
15
3.7
13
ns
tPHL
A or B
Any Y
2.2
6.1
9
1.7
11
2.2
10
ns
tPLH
Any C
Any Y
2.2
5.1
7
1.7
9
2.2
8
ns
tPHL
Any C
Any Y
1.7
4.1
6
1.7
8
1.7
7
ns
tPZH
G
Any Y
2.2
5.6
8
1.7
10
2.2
9
ns
tPZL
G
Any Y
2.2
5.6
8
1.7
10
2.2
9
ns
tPHZ
G
Any Y
1.2
3.3
5
1.2
6.5
1.2
6
ns
tPLZ
G
Any Y
1.2
4
6
1.2
8
1.2
7
ns
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuit and waveforms are shown in Section 1.
SN54F253, SN74F253
DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993
2–6
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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Copyright
©
1998, Texas Instruments Incorporated