
RCV56HCF PCI/CardBus Modem Designer’s Guide
4.4 PACKAGE DIMENSIONS
The package dimensions are shown in Figure 
D
D1
D2
PIN 1
REF
D D1 D2
| e | b | 
D1
| A | A2 | 
 | 
| 
 | 
 | c | 
| 
 | A1 | L | 
| 
 | 
 | |
| 
 | 
 | L1 | 
DETAIL A
D1
DETAIL A
| 
 | Millimeters | Inches* | ||
| Dim. | Min. | Max. | Min. | Max. | 
| A | 1.6 MAX | 0.0630 MAX | ||
| A1 | 0.05 | 0.15 | 0.0020 | 0.0059 | 
| A2 | 1.4 REF | 0.0551 REF | ||
| D | 21.75 | 22.25 | 0.8563 | 0.8760 | 
| D1 | 20.0 REF | 0.7874 REF | ||
| D2 | 17.5 REF | 0.6890 REF | ||
| L | 0.5 | 0.75 | 0.0197 | 0.0295 | 
| L1 | 1.0 REF | 0.0394 REF | ||
| e | 0.50 BSC | 0.0197 BSC | ||
| b | 0.17 | 0.27 | 0.0067 | 0.0106 | 
| c | 0.11 | 0.17 | 0.0043 | 0.0067 | 
| Coplanarity | 0.08 MAX | 0.0031 MAX | ||
| 
 | 
 | 
 | 
 | 
 | 
Ref: 
*Metric values (millimeters) should be used for PCB layout. English values (inches) are converted from metric values and may include 
Figure 4-1.  Package Dimensions - 144-Pin  TQFP
| ROCKWELL PROPRIETARY INFORMATION | 1129 |