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HD74HC147
10-to-4-line Priority Encoder
REJ03D0572-0200 (Previous ADE-205-446) Rev.2.00 Oct 11, 2005
Description
The HD74HC147 features priority encoding of the inputs to ensure that only the highest order data line is encoded. Nine input lines are encoded to a four line BCD output. The implied decimal zero condition requires no input condition as zero is encoded when all nine data lines are at a high logic level. All data inputs and outputs are active at the low logic level.
Features
* * * * * * High Speed Operation: tpd = 14.5 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 HD74HC147P HD74HC147FPEL Package Type DILP-16 pin SOP-16 pin (JEITA) Package Code (Previous Code) PRDP0016AE-B (DP-16FV) Package Abbreviation P -- EL (2,000 pcs/reel) Taping Abbreviation (Quantity)
PRSP0016DH-B FP (FP-16DAV) Note: Please consult the sales office for the above package availability.
Function Table
1 H X X X X X X X X L H: L: X: 2 H X X X X X X X L H High level Low level Irrelevant 3 H X X X X X X L H H 4 H X X X X X L H H H Inputs 5 H X X X X L H H H H 6 H X X X L H H H H H 7 H X X L H H H H H H 8 H X L H H H H H H H 9 H L H H H H H H H H D H L L H H H H H H H Outputs C B H H H L L L L H H H H H H L L H H L L H A H L H L H L H L H L
Rev.2.00, Oct 11, 2005 page 1 of 5
HD74HC147
Pin Arrangement
41 52 Inputs 63 74 85 C6 Outputs B7 GND 8 B A 9 6 7 8 C D 3 2 1 5 4
16 VCC 15 NC 14 D 13 3 12 2 Inputs 11 1 10 9 9A Output Output
(Top view)
Absolute Maximum Ratings
Item Supply voltage range Input voltage Output voltage Output current DC current drain per VCC, GND DC input diode current DC output diode current Power dissipation per package Storage temperature Symbol VCC VIN VOUT IOUT ICC, IGND IIK IOK PT Tstg Rating -0.5 to +7.0 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 25 50 20 20 500 -65 to +150 Unit V V V mA mA mA mA mW 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 0 to 400
Unit V V C ns
Conditions
VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V
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 2 of 5
HD74HC147
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) tPHL 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 -- Min -- -- -- -- -- -- -- -- -- -- Typ -- 15 -- -- 14 -- -- 5 -- 5 Max 220 44 37 220 44 37 75 15 13 10 Ta = -40 to +85C Min -- -- -- -- -- -- -- -- -- -- Max 275 55 47 275 55 47 95 19 16 10 Unit ns Test Conditions Select to any Y (4 levels)
tPLH
ns
Output rise/fall time Input capacitance
tTLH, tTHL
ns
Cin
pF
Test Circuit
Measurement point
CL*
Note: CL includes the probe and fig capacitance.
Rev.2.00, Oct 11, 2005 page 3 of 5
HD74HC147 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 4 of 5
HD74HC147
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 5 of 5
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