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HD74LS145
BCD-to-Decimal Decoder / Driver (with 15 V outputs)
REJ03D0436-0300 Rev.3.00 Jul.13.2005 This BCD-to-decimal decoder / driver consists of eight inverters and ten four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid BCD input logic ensures that all outputs remain off for all invalid binary input conditions. This decoder features highperformance, n-p-n output transistors designed for use as indicator / relay drivers or as open-collector logic-circuit drivers.
Features
* Ordering Information
Part Name HD74LS145P HD74LS145FPEL 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 Taping Abbreviation (Quantity) -- EL (2,000 pcs/reel)
Note: Please consult the sales office for the above package availability.
Pin Arrangement
Y0 Y1 Y2 Outputs Y3 Y4 Y5 Y6 GND
1 0 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 D C B A
16 15 14 13 12 11 10 9
VCC A B Inputs C D Y9 Y8 Y7 Outputs
(Top view)
Rev.3.00, Jul.13.2005, page 1 of 5
HD74LS145
Function Table
No. 0 1 2 3 4 5 6 7 8 9 D L L L L L L L L H H H H H H H H Inputs C B L L L L L H L H H H H H L L L L H H H H L L H H L L H H L L H H A L H L H L H L H L H L H L H L H 0 L H H H H H H H H H H H H H H H 1 H L H H H H H H H H H H H H H H 2 H H L H H H H H H H H H H H H H 3 H H H L H H H H H H H H H H H H Outputs 4 5 H H H H H H H H L H H H H H H H H H H H H L H H H H H H H H H H 6 H H H H H H L H H H H H H H H H 7 H H H H H H H L H H H H H H H H 8 H H H H H H H H L H H H H H H H 9 H H H H H H H H H L H H H H H H
Invalid
Block Diagram
A Y0 Y1 Y2 B Inputs Y4 Outputs C Y5 Y6 D Y7 Y8 Y9 Y3
Absolute Maximum Ratings
Item Supply voltage Input voltage Power dissipation Storage temperature Symbol VCC VIN PT Tstg Ratings 7 7 400 -65 to +150 Unit V V mW C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Rev.3.00, Jul.13.2005, page 2 of 5
HD74LS145
Recommended Operating Conditions
Item Supply voltage Off-state output voltage Low level output current Operating temperature Symbol VCC VO(off) IOL Topr Min 4.75 -- -- -20 Typ 5.00 -- -- 25 Max 5.25 15 80 75 Unit V V mA C
Electrical Characteristics
(Ta = -20 to +75 C)
Item Input voltage Off-state output current On-state output voltage Symbol VIH VIL IO(off) min. 2.0 -- -- -- -- -- -- -- typ.* -- -- -- -- -- -- -- -- max. -- 0.8 250 0.4 0.5 3.0 20 -0.4 Unit V V A Condition
VO(on) IIH IIL
V A mA
Input current
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, VO(off) = 15 V IOL = 12 mA VCC = 4.75 V, VIH = 2 V, IOL = 24 mA VIL = 0.8 V IOL = 80 mA VCC = 5.25 V, VI = 2.7 V VCC = 5.25 V, VI = 0.4 V VCC = 5.25 V, VI = 7 V VCC = 5.25 V VCC = 4.75 V, IIN = -18 mA
-- -- 0.1 mA II Supply current** ICC -- 7 13 mA Input clamp voltage VIK -- -- -1.5 V Notes: * VCC = 5 V, Ta = 25C ** ICC is measured with all outputs open and all inputs grounded.
Switching Characteristics
(VCC = 5 V, Ta = 25C)
Item Propagation delay time Symbol tPLH tPHL min. -- -- typ. -- -- max. 50 50 Unit ns Condition CL = 45 pF, RL = 665
Rev.3.00, Jul.13.2005, page 3 of 5
HD74LS145
Testing Method
Test Circuit
VCC Output
4.5V A B C D
0 1 2 3 4 5 6 7 8 9
RL
Input P.G. Zout = 50
See Testing Table
CL
Waveform
tTLH 90% 1.3 V 10% tPLH tTHL 90% 1.3 V 10% tPHL VOH In phase output tPHL 1.3 V tPLH VOH Out of phase output 1.3 V 1.3 V VOL 1.3 V VOL 3V 0V
Input
Note:
Input pulse; tTLH 15 ns, tTHL 6 ns, PRR = 1 MHz, duty cycle 50%
Rev.3.00, Jul.13.2005, page 4 of 5
HD74LS145
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
L
1
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.3.00, Jul.13.2005, page 5 of 5
Sales Strategic Planning Div.
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