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PDF M74HC154 Data sheet ( Hoja de datos )
| Número de pieza | M74HC154 | |
| Descripción | 4 TO 16 LINE DECODER/DEMULTIPLEXER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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M74HC154
4 TO 16 LINE DECODER/DEMULTIPLEXER
. 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
15 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V to 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS154
B1R
(Plastic Package)
M1R
(Micro Package)
ORDER CODES :
M 74HC 15 4B 1R
M 74H C1 54 M1 R
PIN CONNECTIONS (top view)
DESCRIPTION
The 74HC154 is a high speed CMOS 4 TO 16-LINE
DECODER/DEMULTIPLEXER fabricated in silicon
gate C2MOS technology. It has the same high speed
performance of LSTTL combined with true CMOS low
power consumption.
A binary code applied to the four inputs (A to D) pro-
vides a low level at the selected one of sixteen outputs
excluding the other fifteen outputs, when both the
strobe inputs, G1 and G2, are held low. When either
strobe input is held high, the decording function is in-
hibited to keep all outputs high. The strobe function
makes it easy to expand the decoding lines through
cascading, and simplifies the design of address de-
coding circuits in memory control systems.
All inputs are equipped with protection circuits against
static discharge and transient excess voltage.
NC =
No Internal
Connection
October 1993
1/8
1 page  
M74HC154
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
Value
TA = 25 oC
-40 to 85 oC
Min. Typ. Max. Min. Max.
Unit
tTLH Output Transition Time
tTHL
2.0
4.5
30 75
8 15
95
19 ns
6.0
7 13
16
tPLH Propagation Delay Time
tPHL (A, B, C, D - Y)
2.0
4.5
65 175
19 35
220
44 ns
6.0
16 30
37
tPLH Propagation Delay Time
tPHL (G1, G2 - Y)
2.0
4.5
55 160
17 32
200
40 ns
6.0
15 27
34
CIN Input Capacitance
5 10
10 pF
CPD (*) Power Dissipation Capacitance
57 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
SWITCHING CHARACTERISTICS TEST
CIRCUIT
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHING CHARACTERISTICSTEST.
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet M74HC154.PDF ] | |
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