PartNumber | IS61QDB21M36-250M3 | IS61QDB21M18A-250M3L | IS61QDB21M18A-250B4LI |
Description | SRAM 36Mb 1Mbx36 QUAD Sync SRAM | SRAM 18Mb 1Mx18 250Mhz QUAD Sync SRAM | SRAM 18Mb 1Mx18 250Mhz QUAD Sync SRAM |
Manufacturer | ISSI | ISSI | ISSI |
Product Category | SRAM | SRAM | SRAM |
RoHS | N | Y | Y |
Memory Size | 36 Mbit | 18 Mbit | 18 Mbit |
Organization | 1 M x 36 | 1 M x 18 | 1 M x 18 |
Access Time | 4 ns | - | 8.4 ns |
Maximum Clock Frequency | 250 MHz | 250 MHz | 250 MHz |
Interface Type | Parallel | Parallel | Parallel |
Supply Voltage Max | 1.89 V | 1.9 V | 1.89 V |
Supply Voltage Min | 1.71 V | 1.7 V | 1.71 V |
Supply Current Max | 700 mA | 1150 mA | 900 mA |
Minimum Operating Temperature | 0 C | 0 C | - 40 C |
Maximum Operating Temperature | + 70 C | + 70 C | + 85 C |
Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
Package / Case | BGA-165 | FBGA-165 | FBGA-165 |
Packaging | Tray | Tray | Tray |
Data Rate | DDR | - | - |
Series | IS61QDB21M36 | IS61QDB21M18A | IS61QDB21M18A |
Type | Synchronous | Quad | Synchronous |
Brand | ISSI | ISSI | ISSI |
Number of Ports | 2 | - | - |
Moisture Sensitive | Yes | Yes | Yes |
Product Type | SRAM | SRAM | SRAM |
Factory Pack Quantity | 105 | 105 | 144 |
Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
Memory Type | - | DDR-II | QDR |