STMicroelectronics M54HC237 Rad-hard 3 to 8 line decoder latch Datasheet

M54HC237
RAD-HARD 3 TO 8 LINE DECODER LATCH
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HIGH SPEED:
tPD = 16ns (TYP.) at VCC = 6V
LOW POWER DISSIPATION:
ICC = 4µA(MAX.) at TA=25°C
HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 237
SPACE GRADE-1: ESA SCC QUALIFIED
50 krad QUALIFIED, 100 krad AVAILABLE ON
REQUEST
NO SEL UNDER HIGH LET HEAVY IONS
IRRADIATION
DEVICE FULLY COMPLIANT WITH
SCC-9205-021
DESCRIPTION
The M54HC237 is an high speed CMOS 3 TO 8
LINE DECODER fabricated with silicon gate
C2MOS technology.
DILC-16
FPC-16
ORDER CODES
PACKAGE
FM
EM
DILC
FPC
M54HC237D
M54HC237K
M54HC237D1
M54HC237K1
When GL goes from low to high, the address
present at the select inputs (A, B, C) is stored in
the latches. As long as GL remains high no
address changes will be recognized. Output
enable controls, G1 and G2 control the state of the
outputs independently of the select or
latch-enable inputs. All of the outputs are low
unless G1 is high and G2 is low. The M54HC237
is ideally suited for the implementation of
glitch-free
decoders
in
stored-address
applications in bus oriented systems.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION
April 2004
1/10
M54HC237
IEC LOGIC SYMBOLS
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN N°
SYMBOL
NAME AND FUNCTION
1, 2, 3
4
5
A, B, C
GL
G2
6
G1
15, 14, 13,
12, 11, 10, 9,
7
8
16
Y0 to Y7
Data Inputs
Latch Enable Input
Data Enable Input (Active
LOW)
Data Enable Input (Active
HIGH)
Decoder Outputs
GND
VCC
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUTPUTS
ENABLE
SELECT
GL
G2
G1
C
B
A
Y0
X
X
L
L
L
L
L
L
L
L
H
X
H
L
L
L
L
L
L
L
L
L
L
X
H
H
H
H
H
H
H
H
H
X
X
L
L
L
L
H
H
H
H
X
X
X
L
L
H
H
L
L
H
H
X
X
X
L
H
L
H
L
H
L
H
X
L
L
H
L
L
L
L
L
L
L
X : Don’t Care
2/10
Y1
Y2
Y3
Y4
Y5
Y6
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
L
L
L
L
L
L
Outputs corresponding to stored address H: all others L
Y7
L
L
L
L
L
L
L
L
L
H
M54HC237
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Supply Voltage
VI
DC Input Voltage
VO
DC Output Voltage
Value
Unit
-0.5 to +7
V
-0.5 to VCC + 0.5
-0.5 to VCC + 0.5
V
V
IIK
DC Input Diode Current
± 20
mA
IOK
DC Output Diode Current
± 20
mA
IO
DC Output Current
± 25
mA
± 50
mA
ICC or IGND DC VCC or Ground Current
Power Dissipation
PD
Tstg
Storage Temperature
TL
Lead Temperature (10 sec)
300
mW
-65 to +150
°C
265
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Output Voltage
Top
Operating Temperature
Input Rise and Fall Time
tr, tf
Value
Unit
2 to 6
V
0 to VCC
V
0 to VCC
V
-55 to 125
°C
VCC = 2.0V
0 to 1000
ns
VCC = 4.5V
0 to 500
ns
VCC = 6.0V
0 to 400
ns
3/10
M54HC237
DC SPECIFICATIONS
Test Condition
Symbol
VIH
VIL
VOH
VOL
II
ICC
4/10
Parameter
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Quiescent Supply
Current
Value
TA = 25°C
VCC
(V)
Min.
2.0
4.5
6.0
2.0
4.5
6.0
Typ.
Max.
1.5
3.15
4.2
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
1.5
3.15
4.2
0.5
1.35
1.8
Max.
1.5
3.15
4.2
0.5
1.35
1.8
V
0.5
1.35
1.8
2.0
IO=-20 µA
1.9
2.0
1.9
1.9
4.5
IO=-20 µA
4.4
4.5
4.4
4.4
Unit
V
6.0
IO=-20 µA
5.9
6.0
5.9
5.9
4.5
IO=-4.0 mA
4.18
4.31
4.13
4.10
6.0
IO=-5.2 mA
5.68
2.0
IO=20 µA
0.0
0.1
0.1
0.1
4.5
IO=20 µA
0.0
0.1
0.1
0.1
6.0
IO=20 µA
0.0
0.1
0.1
0.1
4.5
IO=4.0 mA
0.17
0.26
0.33
0.40
6.0
IO=5.2 mA
0.18
0.26
0.33
0.40
6.0
VI = VCC or GND
± 0.1
±1
±1
µA
6.0
VI = VCC or GND
4
40
80
µA
5.8
5.63
V
5.60
V
M54HC237
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
Test Condition
Symbol
Parameter
tTLH tTHL Output Transition
Time
tPLH tPHL Propagation Delay
Time (A, B, C - Y)
tPLH tPHL Propagation Delay
Time (G1 - Y)
tPLH tPHL Propagation Delay
Time (G2 - Y)
tPLH tPHL Propagation Delay
Time (GL - Y)
tW(L)
ts
th
Minimum Pulse
Width (GL)
Minimum Set-up
Time (A, B, C - GL)
Minimum Hold
Time (A, B, C - GL)
Value
TA = 25°C
VCC
(V)
Min.
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Typ.
Max.
30
8
7
60
19
16
45
15
13
45
15
13
65
21
18
10
6
6
12
3
2
75
15
13
180
36
31
140
28
24
140
28
24
190
38
32
75
15
13
50
10
9
25
5
5
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
95
19
16
225
45
38
175
35
30
175
35
30
240
48
41
95
19
16
65
13
11
30
6
5
Unit
Max.
110
22
19
270
54
46
210
42
36
210
42
36
285
57
48
110
22
19
75
15
13
40
8
7
ns
ns
ns
ns
ns
ns
ns
ns
CAPACITIVE CHARACTERISTICS
Test Condition
Symbol
Parameter
VCC
(V)
Value
TA = 25°C
Min.
Typ.
Max.
10
CIN
Input Capacitance
5.0
5
CPD
Power Dissipation
Capacitance (note 1)
5.0
52
-40 to 85°C
-55 to 125°C
Min.
Min.
Max.
10
Unit
Max.
10
pF
pF
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load.
5/10
M54HC237
TEST CIRCUIT
CL = 50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
WAVEFORM 1: PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
6/10
M54HC237
WAVEFORM 2: SETUP AND HOLD TIME, MINIMUM PULSE WIDTH (GL)(f=1MHz; 50% duty cycle)
7/10
M54HC237
DILC-16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
2.1
2.71
0.083
0.107
a1
3.00
3.70
0.118
0.146
a2
0.63
1.14
0.025
B
1.82
2.39
0.072
b
0.40
0.45
0.50
0.016
0.018
0.020
b1
0.20
0.254
0.30
0.008
0.010
0.012
D
20.06
20.32
20.58
0.790
0.800
0.810
e
7.36
7.62
7.87
0.290
0.300
0.310
e1
0.88
2.54
0.035
0.045
0.094
0.100
e2
17.65
17.78
17.90
0.695
0.700
0.705
e3
7.62
7.87
8.12
0.300
0.310
0.320
F
7.29
7.49
7.70
0.287
0.295
0.303
I
3.83
0.151
K
10.90
12.1
0.429
0.476
L
1.14
1.5
0.045
0.059
0056437F
8/10
M54HC237
FPC-16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
6.75
6.91
7.06
0.266
0.272
0.278
B
9.76
9.94
10.14
0.384
0.392
0.399
C
1.49
1.95
0.059
D
0.102
0.127
0.152
0.004
0.005
0.006
E
8.76
8.89
9.01
0.345
0.350
0.355
F
0.077
1.27
G
0.38
H
6.0
L
18.75
M
0.33
0.050
0.43
0.48
0.015
0.017
0.019
0.237
0.38
N
22.0
0.738
0.43
0.013
0.867
0.015
4.31
0.017
0.170
G
F
D
H
9
16
A
N
L
8
1
H
E
B
M
C
0016030E
9/10
M54HC237
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