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| Part Details | Price (USD) | Global Stock | Lead Time | Date Code | Package | Package Style | Memory Density | Memory Organization | Supply Voltage-Nom | Access Time-Max | Temperature Grade | Mounting Feature |
 AT27C256R-70PU Microchip AT27C256R Series 5.5 V 256 Kb (32 K x 8) 70 ns Through Hole EPROM OTP - PDIP-28 | Qty Unit Price 1 $2.42 20 $2.37 40 $2.34 125 $2.30 250 $2.25 | 3,888 Ready to Ship! | 4 Weeks | 2405 | Tube | PDIP-28 | 256kb | 32 K x 8 | 4.5V to 5.5V | 70ns | Industrial | Through Hole |
| Qty Unit Price 1 $4.06 10 $3.98 25 $3.92 75 $3.85 150 $3.76 | 2,163 Ready to Ship! | 4 Weeks | 2407 | Tube | PDIP-32 | 1Mb | 128 K x 8 | 5V | 70ns | Industrial | Through Hole | |
| Qty Unit Price 12 $10.11 | 1,392 Ready to Ship! | 4 Weeks | 2430 | Tube | PDIP-32 | 4Mb | 512K x 8 | 5V | 70ns | Industrial | Through Hole | |
| Qty Unit Price 1 $2.76 15 $2.70 30 $2.67 100 $2.62 200 $2.57 | 1,163 Ready to Ship! | 19 Weeks | 2320 | Tube | PDIP-28 | 512kb | 64 K x 8 | 5V | 45ns | Industrial | Through Hole | |
 AT27C010-70JU Microchip AT27C010 Series 1 Mb (128 K x 8) 5.5 V One-Time Programmable Read-Only Memory | Qty Unit Price 1 $3.16 15 $3.10 30 $3.06 100 $3.01 200 $2.94 | 559 Ready to Ship! | 4 Weeks | 2343 | Tube | PLCC-32 | 1Mb | 128 K x 8 | 4.5V to 5.5V | 70ns | Industrial | Surface Mount |
 AT27C4096-90PU Microchip AT27C4096 Series One Time Programmable 4 Mb ( 256K x 16) 90ns EPROM - PDIP-40 | Qty Unit Price 10 $7.71 | 280 Ready to Ship! | 4 Weeks | 2405 | Tube | PDIP-40 | 4Mb | 256 K x 16 | 5V | 90ns | Industrial | Surface Mount |
| AT27C020-55JU Microchip AT27C020 Series 2 Mb (256 K x 8) 5.5 V One-time Programmable Read-only Memory | Qty Unit Price 32 $3.89 64 $3.85 96 $3.82 128 $3.81 160 $3.75 | 192 Ready to Ship! | 19 Weeks | 2437 | Tube | PLCC-32 | 2Mb | 256 K x 8 | 4.5V to 5.5V | 55ns | Industrial | Surface Mount |
| AT27C512R-70JU Microchip AT27C512R Series 5.5 V 512 Kb (64 K x 8) 70 ns Through Hole EPROM OTP - PLCC-32 | Qty Unit Price 1 $2.55 15 $2.50 30 $2.47 100 $2.43 200 $2.37 | 138 Ready to Ship! | 19 Weeks | 2336 | Tube | PLCC-32 | 512kb | 64K x 8 | 4.5V to 5.5V | 70ns | Industrial | Surface Mount |
| Qty Unit Price 12 $12.34 24 $12.26 36 $12.21 48 $12.17 60 $12.06 | 132 Ready to Ship! | 20 Weeks | 2419 | Tube | DIP-32 | 8Mb | 1Mx8 | 4.5V to 5.5V | 90ns | Through Hole | ||
 AT27C020-55PU Microchip AT27C020 Series 2 Mb (256K x 8) One-Time Programmable Read-only Memory -DIP-32 | Qty Unit Price 12 $4.95 24 $4.90 48 $4.84 60 $4.82 180 $4.70 | 84 Ready to Ship! | 21 Weeks | 2402 | Tube | PDIP-32 | 2Mb | 256 K x 8 | 4.5V to 5.5V | 55ns | Industrial | Through Hole |
| Qty Unit Price 750 $2.30 | 0 | 19 Weeks | Reel | |||||||||
| Qty Unit Price 500 $7.70 | 0 | 4 Weeks | Reel | |||||||||
| Qty Unit Price 750 $2.55 | 0 | 19 Weeks | Reel | PLCC-32 | 512kb | 64K x 8 | 4.5V to 5.5V | 45ns | Industrial | Surface Mount | ||
| Qty Unit Price 750 $2.46 | 0 | 19 Weeks | Reel | PLCC-32 | 512kb | 64K x 8 | 4.5V to 5.5V | 70ns | Industrial | Surface Mount | ||
 AT27BV256-70JU-T Microchip 256K (32K x 8) Unregulated Battery Voltage, Highspeed, One-time Programmable, Re | Qty Unit Price 750 $3.44 | 0 | Std. Mfr. Pkg | |||||||||
| Qty Unit Price 500 $4.06 | 0 | Std. Mfr. Pkg | ||||||||||
 AT27BV256-70JU Microchip AT27BV256 Series 256 kb (32K x 8) One-Time Programmable Read-Only Memory-PLCC-32 | Qty Unit Price 32 $3.25 | 0 | 19 Weeks | Tube | PLCC-32 | 256kb | 32 K x 8 | 2.7V to 3.6V | 70ns | Industrial | Surface Mount | |
| AT27C020-90JU Microchip AT27C020 Series 2 Mb (256 K x 8) 5.5 V One-time Programmable Read-only Memory | Qty Unit Price 32 $3.64 | 0 | 19 Weeks | Tube | PLCC-32 | 2Mb | 256 K x 8 | 4.5V to 5.5V | 90ns | Industrial | Surface Mount | |
 AT27C020-90PU Microchip AT27C020 Series 2 Mb (256K x 8) One-Time Programmable Read-Only Memory-DIP-32 | Qty Unit Price 12 $4.61 | 0 | 4 Weeks | Tube | PDIP-32 | 2Mb | 256 K x 8 | 4.5V to 5.5V | 90ns | Industrial | Through Hole | |
| Qty Unit Price 32 $7.41 64 $7.36 96 $7.31 | 0 | 19 Weeks | Tube | PLCC-32 | 4Mb | 512 K x 8 | 4.5V to 5.5V | 70ns | Industrial | Surface Mount | ||
| Qty Unit Price 32 $7.03 64 $6.99 96 $6.96 128 $6.93 | 0 | 4 Weeks | Tube | PLCC-32 | 4Mb | 512 K x 8 | 5V | 90ns | Industrial | Surface Mount | ||
| Qty Unit Price 12 $10.70 24 $10.62 36 $10.58 48 $10.55 60 $10.45 | 0 | 4 Weeks | 2409 | Tube | PDIP-32 | 4Mb | 512 K x 8 | 4.5V to 5.5V | 90ns | Industrial | Through Hole | |
| Qty Unit Price 32 $12.25 | 0 | 4 Weeks | Tube | PLCC-32 | 8Mb | 1 M x 8 | 4.5V to 5.5V | 90ns | Industrial | Surface Mount | ||
| Qty Unit Price 10 $4.17 30 $4.10 40 $4.08 100 $4.01 150 $3.95 | 0 | 19 Weeks | Tube | |||||||||
| Qty Unit Price 27 $3.79 54 $3.74 81 $3.72 108 $3.70 135 $3.64 | 0 | 26 Weeks | Tube |
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