| PartNumber | AT27C040-70TC | AT27C040-70TU | AT27C040-70TI |
| Description | EPROM 4M bit | EPROM 4Mb (512Kx8) OTP 5V 70ns | EPROM 4Mb (512Kx8) OTP 5V 70ns |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EPROM | EPROM | EPROM |
| RoHS | N | Y | N |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSOP-32 | TSOP-32 | TSOP-32 |
| Type | OTP | OTP | OTP |
| Memory Size | 4 MB | 4 Mbit | 4 Mbit |
| Organization | 512 k x 8 | 512 k x 8 | 512 k x 8 |
| Interface Type | Parallel | Parallel | Parallel |
| Operating Supply Current | 30 mA | 30 mA | 30 mA |
| Programming Voltage | 13 V | 13 V | 13 V |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Minimum Operating Temperature | - 40 C | 0 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | AT27C040 | AT27C040 | AT27C040 |
| Access Time | 70 ns | 70 ns | 70 ns |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Operating Supply Voltage | 2.7 V to 3.6 V | 5 V | 5 V |
| Output Enable Access Time | 30 ns | 30 ns | 30 ns |
| Product Type | EPROM | EPROM | EPROM |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Factory Pack Quantity | - | 156 | 156 |