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HD74HC155
Dual 2-to-4-line Decoders/Demultiplexers
REJ03D0787-0200 (Previous ADE-205-453) Rev.2.00 Oct 11, 2005
Description
This circuit features dual 1-line-to-4-line demultiplexer with individual strobes and common binary-address input. When both sections are enabled by the strobes, the common binary-address inputs sequentially select and route associated input data to the appropriate output of each section. The individual strobes permit activating or inhibiting each of the 4-bit sections as desired. Data applied to input 1C is inverted through its outputs. The inverter following the 1C data input permits use as a 3-to-8-line decoder or 1-to-8-line demultiplexer without external gating.
Features
* * * * * * High Speed Operation: tpd (A or B to Y) = 15 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C) Ordering Information
Part Name HD74HC155P HD74HC155FPEL Package Type DILP-16 pin SOP-16 pin (JEITA) Package Code (Previous Code) PRDP0016AE-B (DP-16FV) PRSP0016DH-B (FP-16DAV) Package Abbreviation P FP -- EL (2,000 pcs/reel) Taping Abbreviation (Quantity)
Note: Please consult the sales office for the above package availability.
Rev.2.00, Oct 11, 2005 page 1 of 6
HD74HC155
Function Table
2-line-to-4-line Decoder/1-line-to-4-line Demultiplexer
Inputs Select B X L L H H X A X L H L H X Inputs Select B X L L H H X H: L: X: High level Low level Irrelevant A X L H L H X Strobe 2G H L L L L X Data 2C X L L L L H Outputs 2Y0 H L H H H H 2Y1 H H L H H H 2Y2 H H H L H H 2Y3 H H H H L H Strobe 1G H L L L L X Data 1C X H H H H L Outputs 1Y0 H L H H H H 1Y1 H H L H H H 1Y2 H H H L H H 1Y3 H H H H L H
3-line-to-8-line Decoder/1-line-to-8-line Demultiplexer
Inputs C X L L L L H H H H Select B X L L H H L L H H A X L H L H L H L H Strobe Data G H L L L L L L L L 0 2Y0 H L H H H H H H H 1 2Y1 H H L H H H H H H 2 2Y2 H H H L H H H H H Outputs 3 2Y3 H H H H L H H H H 4 1Y0 H H H H H L H H H 5 1Y1 H H H H H H L H H 6 1Y2 H H H H H H H L H 7 1Y3 H H H H H H H H L
Notes: 1. C: inputs 1C and 2C connected together 2. G: inputs 1G and 2G connected together 3. X: irrelevant
Rev.2.00, Oct 11, 2005 page 2 of 6
HD74HC155
Pin Arrangement
Data 1 1C Strobe 1G 2 Select Input B 3 1Y3 4 1Y2 5 Outputs 1Y1 6 1Y0 7 GND 8 (Top view)
1Y1 1Y0 1Y3 1Y2 B B A A B B A A 2Y1 2Y0
16 VCC 15 Data 2C Strobe 14 2G
1C 1G
Select 13 Input A
2C 2G
2Y3 2Y2
12 2Y3 11 2Y2 Outputs 10 2Y1 9 2Y0
Absolute Maximum Ratings
Item Symbol Rating Unit Supply voltage range VCC -0.5 to +7.0 V Input voltage VIN -0.5 to VCC + 0.5 V Output voltage VOUT -0.5 to VCC + 0.5 V Output current IOUT 25 mA DC current drain per VCC, GND ICC, IGND 50 mA DC input diode current IIK 20 mA DC output diode current IOK 20 mA Power dissipation per package PT 500 mW Storage temperature Tstg -65 to +150 C Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
Recommended Operating Conditions
Item Supply voltage Input / Output voltage Operating temperature Input rise / fall time Note:
*1
Symbol VCC VIN, VOUT Ta tr , tf
Ratings 2 to 6 0 to VCC -40 to 85 0 to 1000 0 to 500
Unit V V C ns
Conditions
VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V
0 to 400 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
Rev.2.00, Oct 11, 2005 page 3 of 6
HD74HC155
Electrical Characteristics
Ta = 25C Item Input voltage Symbol VCC (V) VIH 2.0 4.5 6.0 VIL 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL 2.0 4.5 6.0 4.5 Input current Quiescent supply current Iin ICC 6.0 6.0 6.0 Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.18 5.68 -- -- -- -- -- -- -- Typ -- -- -- -- -- -- 2.0 4.5 6.0 -- -- 0.0 0.0 0.0 -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.26 0.26 0.1 4.0 Ta = -40 to+85C Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.13 5.63 -- -- -- -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.33 0.33 1.0 40 V IOH = -4 mA IOH = -5.2 mA Vin = VIH or VIL IOL = 20 A V Unit V Test Conditions
Output voltage
VOH
V
Vin = VIH or VIL IOH = -20 A
IOL = 4 mA IOL = 5.2 mA A Vin = VCC or GND A Vin = VCC or GND, Iout = 0 A
Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25C Item Propagation delay time Symbol VCC (V) tPLH, tPHL 2.0 4.5 6.0 tPLH, tPHL 2.0 4.5 6.0 tPLH, tPHL 2.0 4.5 6.0 Output rise/fall time tTLH, tTHL 2.0 4.5 6.0 Input capacitance Cin -- Min -- -- -- -- -- -- -- -- -- -- -- -- -- Typ -- 13 -- -- 15 -- -- 14 -- -- 5 -- 5 Max 160 32 27 160 32 27 145 29 25 75 15 13 10 Ta = -40 to +85C Min -- -- -- -- -- -- -- -- -- -- -- -- -- Max 200 40 34 200 40 34 180 36 31 95 19 16 10 pF ns ns 1C to Y ns A or B to Y Unit ns Test Conditions A, B, 2C, 1G or 2G to Y
Rev.2.00, Oct 11, 2005 page 4 of 6
HD74HC155
Test Circuit
Measurement point
CL*
Note: CL includes the probe and fig capacitance.
Waveforms
tr 90 % 50 % 10 % t PLH 90 % Same-phase output 50 % 10 % t TLH 90 % 50 % 10 % t PHL 90 % 50 % 10 % t THL VOH VOL tf VCC 0V
Input
t PHL 90 % Inverse-phase output
t PLH
90 % 50 % 10 % t THL 50 % 10 % t TLH
VOH VOL
Notes: 1. Input waveform: PRR 1 MHz, Zo = 50 , tr 6 ns, tf 6 ns 2. The output are measured one at a time with one transition per measurement.
Rev.2.00, Oct 11, 2005 page 5 of 6
HD74HC155
Package Dimensions
JEITA Package Code P-DIP16-6.3x19.2-2.54 RENESAS Code PRDP0016AE-B Previous Code DP-16FV MASS[Typ.] 1.05g
D
16
9
1 0.89 b3
8
Z
E
A1
A
Reference Symbol
Dimension in Millimeters Min Nom 7.62 19.2 6.3 20.32 7.4 5.06 0.51 0.40 0.48 1.30 0.19 0 2.29 2.54 0.25 0.31 15 2.79 1.12 2.54 0.56 Max
e D E
1
L
A A1
e
bp
e1
b c b c
p 3
e Z ( Ni/Pd/Au plating ) L
JEITA Package Code P-SOP16-5.5x10.06-1.27
RENESAS Code PRSP0016DH-B
Previous Code FP-16DAV
MASS[Typ.] 0.24g
*1
D F 9
16
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
HE
E
Index mark
Reference Symbol
*2
c
Dimension in Millimeters Min Nom 10.06 5.50 Max 10.5
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
D E A2
8 bp x M L1
A1 A bp b1 c
0.00
0.10
0.20 2.20
0.34
0.40
0.46
0.15
1
0.20
0.25
A
c
HE
0 7.50 7.80 1.27
8 8.00
A1
y L
e x y
0.12 0.15 0.80 0.50
1
Detail F
Z L L 0.70 1.15
0.90
Rev.2.00, Oct 11, 2005 page 6 of 6
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