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PDF M54HC259 Data sheet ( Hoja de datos )

Número de pieza M54HC259
Descripción 8 BIT ADDRESSABLE LATCH
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo



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No Preview Available ! M54HC259 Hoja de datos, Descripción, Manual

M54HC259
M74HC259
. HIGH SPEED
tPD = 15 ns (TYP.) at VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL PROPAGATION DELAYS
IOH= IOL = 4 mA (MIN.)
. BALANCED PRORAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V to 6 V
. PIN AND FUNCTION COMPATIBLE WITH
54/74LS259
DESCRIPTION
The M54/74HC259 is a high speed CMOS 8 BIT
ADDRESSABLE LATCH fabricated in silicon gate
C2MOS technology. It has the same high speed per-
formance of LSTTL combined with true CMOS low
power consumption.
The M54HC259/M74HC259 has single data input
(D) 8 latch outputs (Q0-Q7), 3 address inputs (A, B,
and C), common enable input (E), and a common
CLEAR input. To operate this device as an address-
able latch, data is held on the D input, and the ad-
dress of the latch into which the data is to be entered
is held on the A, B, and C inputs. When ENABLE is
taken low the data flows through to the addresses
output. The data is stored on the positive-going
edge of the ENABLE pulse. All unaddressed latches
will remain unaffected. With ENABLE in the high
state the device is deselected and all latches remain
in their previous state, unaffected by changes on the
data or address inputs. To eliminate the possibility
of entering erroneous data into the latches, the EN-
ABLE should be held high (inactive) while the ad-
dress lines are changing. If ENABLE is held high and
CLEAR is taken low all eight latches are cleared to
the low state. If ENABLE is low all latches except the
addressed latch will be cleared. The addressed
latch will instead follow the D input, effectively imple-
menting a 3-to 8 line decoder.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
October 1992
8 BIT ADDRESSABLE LATCH
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M 54HC 25 9F 1R
M 74H C2 59 M1 R
M 74HC 25 9B 1R
M 74H C2 59 C1 R
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
1/12

1 page




M54HC259 pdf
M54/M74HC259
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
Value
-40 to 85 oC
74HC
Min. Max.
-55 to 125 oC
54HC
Min. Max.
Unit
tTLH Output Transition 2.0
tTHL Time
4.5
30 75
8 15
95 110
19 22 ns
6.0 7 13 16 19
tPLH Propagation
tPHL Delay Time
(DATA - Q)
2.0
4.5
6.0
56 140
18 28
15 24
175 210
35 42 ns
30 36
tPLH Propagation
tPHL Delay Time
(A, B, C - Q)
2.0
4.5
6.0
76 190 240 285
24 38 48 57 ns
20 32 41 48
tPLH Propagation
tPHL Delay Time
(G - Q)
2.0
4.5
6.0
57 150 190 225
19 30 38 45 ns
16 26 32 38
tPLH Propagation
tPHL Delay Time
(CLEAR - Q)
2.0
4.5
6.0
45 115 145 175
15 23 29 35 ns
13 20 25 30
tW(L) Minimum Pulse
Width
(ENABLE)
2.0
4.5
6.0
28 75
7 15
6 13
90 115
19 23 ns
16 20
tW(L) Minimum Pulse
Width
(CLEAR)
2.0
4.5
6.0
24 75
6 15
5 13
90 115
19 23 ns
16 20
ts Minimum Set-up 2.0
Time
4.5
(DATA)
6.0
12 50 60 75
3 10 12 15 ns
39
11 13
ts Minimum Set-up 2.0
Time
4.5
(A, B, C)
6.0
25 30 40
5 6 8 ns
557
th Minimum Hold 2.0
Time
4.5
(DATA)
6.0
555
5 5 5 ns
555
th Minimum Hold 2.0
Time
4.5
(A, B, C)
6.0
000
0 0 0 ns
000
CIN Input Capacitance
5 10 10 10 pF
CPD (*) Power Dissipation
Capacitance
66
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD VCC fIN + ICC
5/12

5 Page





M54HC259 arduino
DIM.
A
B
D
d1
d2
E
e
e3
F
G
M
M1
M54/M74HC259
MIN.
9.78
8.89
4.2
7.37
PLCC20 MECHANICAL DATA
mm
TYP.
2.54
0.56
1.27
5.08
0.38
1.27
1.14
MAX.
10.03
9.04
4.57
MIN.
0.385
0.350
0.165
8.38 0.290
0.101
inch
TYP.
0.100
0.022
0.050
0.200
0.015
0.050
0.045
MAX.
0.395
0.356
0.180
0.330
0.004
P027A
11/12

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