ADVANCE INFORMATION IDT71V416 3.3V CMOS STATIC RAM 4 MEG (256K x 16-BIT) Integrated Device Technology, Inc. FEATURES: DESCRIPTION: • 256K x 16 advanced high-speed CMOS Static RAM • JEDEC Center Power /GND pinout for reduced noise • Equal access and cycle times — 12/15/20ns • Single 3.3V power supply • One Chip Select plus one Output Enable pin • Bidirectional data inputs and outputs directly TTL-compatible • Low power consumption via chip deselect • Upper and Lower Byte Enable Pins • Available in 44-pin, 400 mil plastic SOJ package The IDT71V416 is a 4,194,304-bit high-speed Static RAM organized as 256K x 16. It is fabricated using IDT’s highperfomance, high-reliability CMOS technology. This state-ofthe-art technology, combined with innovative circuit design techniques, provides a cost-effective solution for high-speed memory needs. The IDT71V416 has an output enable pin which operates as fast as 6ns, with address access times as fast as 12ns. All bidirectional inputs and outputs of the IDT71V416 are TTLcompatible and operation is from a single 3.3V supply. Fully static asynchronous circuitry is used, requiring no clocks or refresh for operation. The IDT71V416 is packaged in a 44-pin, 400mil Plastic SOJ. FUNCTIONAL BLOCK DIAGRAM OE# A0 - A17 Output Enable Buffer Address Buffers Row / Column Decoders 8 CE# Chip Enable Buffer 8 4,194,304-bit Memory Array WE# 16 Write Enable Buffer Sense Amps and Write Drivers 8 8 High Byte Output Buffer High Byte Write Buffer Low Byte Output Buffer Low Byte Write Buffer 8 I/O 15 8 I/O 8 8 8 I/O 7 I/O 0 BHE# Byte Enable Buffers BLE# 3624 drw 01 The IDT logo is a registered trademark of Integrated Device Technology, Inc. COMMERCIAL TEMPERATURE RANGE JULY 1996 1996 Integrated Device Technology, Inc. 3624/- 10.1 1 IDT71V416 3.3V CMOS STATIC RAM 4 MEG (256K x 16-BIT) COMMERCIAL TEMPERATURE RANGE PIN CONFIGURATION A4 A3 A2 A1 A0 CE I/O 0 I/O 1 I/O 2 I/O 3 VDD VSS I/O 4 I/O 5 I/O 6 I/O 7 WE A15 A14 A13 A12 A16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 PIN DESCRIPTION S044-1 A0 – A17 A5 A6 A7 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 Address Inputs Input Chip Select Input Write Enable Input Output Enable Input High Byte Enable Input Low Byte Enable Input I/O0 - I/O15 Data Input/Output I/O VDD 3.3V Power VSS Ground CS WE OE BHE BLE OE BHE BLE I/O 15 I/O 14 I/O 13 I/O 12 Power Gnd VSS VDD I/O 11 I/O 10 I/O 9 3624 tbl 01 I/O 8 NC A8 A9 A10 A11 A17 3624 drw 02 SOJ TOP VIEW ORDERING INFORMATION IDT 71V416 Device Type S XX XXX Power Speed Package Y 400-mil SOJ (S044-1) 12 15 20 Speed in nanoseconds 3624 drw 03 10.1 2