Renesas Portable Generator HD74AC182 User Guide

HD74AC182  
Carry Lookahead Generator  
REJ03D0258–0200Z  
(Previous ADE-205-378 (Z))  
Rev.2.00  
Jul.16.2004  
Description  
The HD74AC182 is a high-speed carry lookahead generator. It is generally used with the HD74AC181 or HD74AC381  
4-bit arithmetic logic unit to provide high-speed lookahead over word lengths of more than four bits.  
Features  
Outputs Source/Sink 24 mA  
Ordering Information  
Part Name  
Package Type  
Package Code Package AAbbreviation (Quantity)  
HD74AC182FPEL SOP-16 pin (JEITA) FP-16DAV  
HD74AC182RPEL SOP-16 pin (JEDEC) FP-16DNV  
FP  
RP  
cs/reel)  
s/reel)  
Notes: 1. Please consult the sales office for the above package
2. The packages with lead-free pins are distinguishes by adding V at the end of  
the package code.  
Pin Arrangement  
6
7
8
16 VCC  
G
3
15 P2  
14  
13  
G
2
C
n
12 Cn+X  
11 Cn+y  
10 G  
P
GND  
9
Cn+z  
(Top view)  
Rev.2.00, Jul.16.2004, page 1 of 6  
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HD74AC182  
Cn + x = G0 + P0Cn  
Cn + y = G1 + P1G0 + P1P0Cn  
Cn + z = G2 + P2G1 + P2P1G0 + P2P1P0Cn  
G
P
= G3 + P3G2 + P3P2G1 + P3P2P1G0  
= P3P2P1P0  
Also, the HD74AC182/HD74ACT182 can be used with binary ALUs in an active Low or active High input operand  
mode. The connections (Figure a) to and from the ALU to the carry lookahead generator are identical in both cases.  
Carries are rippled between lookahead blocks. The critical speed path follows the circled numbers. There are several  
possible arrangements for the carry interconnects, but all achieve about the same speed. A 28-bit ALU is formed by  
dropping the last HD74AC182/HD74ACT182.  
Truth Table  
Inputs  
Outputs  
Cn + z  
Cn  
G0  
P0  
G1  
P1  
G2  
P2  
G3  
P3  
Cn + x  
Cn + y  
G
P
X
L
H
H
L
H
X
X
L
L
L
X
H
X
X
L
H
H
X
X
H
H
X
L
X
H
X
X
X
L
H
H
H
L
H
X
X
X
L
X
X
H
X
X
X
L
X
X
X
H
H
H
X
L
X
X
X
H
H
X
X
L
L
X
X
H
X
X
X
X
L
X
H
X
X
X
X
L
H
H
H
H
H
X
L
L
L
L
X
X
X
H
H
H
H
H
X
X
X
X
X
L
X
X
X
X
H
X
X
X
L
X
L
X
X
X
L
H
H
H
L
H
X
X
X
X
L
H
H
H
H
L
X
X
X
L
X
X
L
L
X
L
L
L
H
X
X
X
L
X
H
X
X
L
X
X
H
X
L
X
X
X
H
L
H
H
H
H
L
H : High Voltage Level  
L
:
:
Low Voltage Level  
Immaterial  
X
Rev.2.00, Jul.16.2004, page 3 of 6  
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HD74AC182  
Absolute Maximum Ratings  
Item  
Supply voltage  
Symbol  
VCC  
Ratings  
–0.5 to 7  
Unit  
Condition  
VI = –0.5V  
V
DC input diode current  
IIK  
–20  
mA  
mA  
V
20  
VI = Vcc+0.5V  
DC input voltage  
VI  
–0.5 to Vcc+0.5  
DC output diode current  
IOK  
–50  
mA  
mA  
V
VO = –0.5V  
50  
VO = Vcc+0.5V  
DC output voltage  
VO  
–0.5 to Vcc+0.5  
±50  
DC output source or sink current  
DC VCC or ground current per output pin  
Storage temperature  
IO  
mA  
mA  
°C  
ICC, IGND  
Tstg  
±50  
–65 to +150  
Recommended Operating Conditions  
Item  
Symbol  
Ratings  
2 to 6  
Unit  
Condition  
Supply voltage  
VCC  
Input and output voltage  
Operating temperature  
VI, VO  
Ta  
0 to VCC  
–40 to +85  
8
Input rise and fall time  
(except Schmitt inputs)  
tr, tf  
VCC = 3.0V  
CC = 4.5 V  
VCC = 5.5 V  
VIN 30% to 70% VCC  
DC Characteristics  
Item  
Sym-  
bol  
Vcc  
(V)  
Ta = 2
nit  
Condition  
min.  
2.1  
5  
x.  
Input Voltage  
VIH  
VIL  
3.0  
V
VOUT = 0.1 V or VCC –0.1 V  
VOUT = 0.1 V or VCC –0.1 V  
4.5  
5.5  
3.
4
5.5  
3.0  
4.5  
5.5  
3.0  
4.5  
5.5  
5.5  
9  
5.49  
.65  
0.9  
1.35  
1.65  
Output voltage  
.94  
4.94  
2.9  
4.4  
5.4  
2.48  
3.80  
4.80  
V
VIN = VIL or VIH  
IOUT = –50 µA  
VIN = VIL or VIH  
IOH = –12 mA  
IOH = –24 mA  
IOH = –24 mA  
VOL  
0.002 0.1  
0.001 0.1  
0.001 0.1  
0.1  
0.1  
0.1  
0.37  
0.37  
0.37  
±1.0  
VIN = VIL or VIH  
IOUT = 50 µA  
0.32  
VIN = VIL or VIH  
IOL = 12 mA  
IOL = 24 mA  
IOL = 24 mA  
0.32  
0.32  
±0.1  
Input leakage  
current  
IIN  
µA  
VIN = VCC or GND  
Dynamic output  
current*  
IOLD  
IOHD  
ICC  
5.5  
5.5  
5.5  
86  
80  
mA  
mA  
µA  
VOLD = 1.1 V  
–75  
VOHD = 3.85 V  
Quiescent supply  
current  
8.0  
VIN = VCC or ground  
*Maximum test duration 2.0 ms, one output loaded at a time.  
Rev.2.00, Jul.16.2004, page 4 of 6  
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HD74AC182  
AC Characteristics  
Ta = +25°C  
CL = 50 pF  
Ta = –40°C to +85°C  
CL = 50 pF  
Item  
Symbol VCC (V)*1  
Min  
1.0  
Typ  
Max  
10.5  
8.0  
Min  
Max  
11.5  
Unit  
Propagation delay  
Pn to P  
tPLH  
3.3  
5.0  
3.3  
5.0  
3.3  
5.0  
3.3  
5.0  
3.3  
5.0  
3.3  
5.0  
8.0  
5.5  
8.0  
5.5  
9.5  
7.5  
9.0  
7.0  
10.5  
8.0  
11.5  
9.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
ns  
ns  
ns  
ns  
ns  
ns  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
9.0  
Propagation delay  
Pn to P  
tPHL  
tPLH  
tPHL  
tPLH  
tPHL  
10.5  
8.0  
11.5  
9.0  
Propagation delay  
Cn to Cn + x, y, z  
12.0  
10.0  
12.0  
10.0  
13.0  
10.5  
14.0  
11.5  
13.0  
11.0  
13.0  
11.0  
14.0  
11.5  
15.5  
12.5  
Propagation delay  
Cn to Cn + x, y, z  
Propagation delay  
Pn or Gn to Cn + x, y, z  
Propagation delay  
Pn or Gn to Cn + x, y, z  
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V  
Voltage Range 5.0 is 5.0 V ± 0.5 V  
Capacitance  
Item  
Input capacitance  
Symbol  
Typ  
Condition  
CIN  
4.5  
50.0  
0 V  
Power dissipation capacitance  
CPD  
Rev.2.00, Jul.16.2004, page 5 of 6  
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HD74AC182  
Package Dimensions  
As of January, 2003  
Unit: mm  
10.06  
10.5 Max  
9
16  
1
8
+ 0.20  
7.80  
0.30  
0.80 Max  
1.15  
0˚  
– 8˚  
1.27  
0.70 ± 0.20  
*0.40 ± 0.06  
0.15  
M
0.12  
orms  
24 g  
*Ni/Pd/Au plating  
As of January, 2003  
Unit: mm  
+ 0.10  
6.10  
0.30  
1.08  
Max  
0˚  
8˚  
+ 0.67  
0.60  
0.20  
*0.40 ± 0.06  
0.15  
0.25  
M
Package Code  
JEDEC  
JEITA  
FP-16DNV  
Conforms  
Conforms  
0.15 g  
*Ni/Pd/Au plating  
Mass (reference value)  
Rev.2.00, Jul.16.2004, page 6 of 6  
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