WS1M8-17DJCA中文资料

White Electronic Designs

WS1M8-XXX

2x512Kx8 DUALITHIC? SRAM

FEATURES

Access Times 17, 20, 25, 35, 45, 55ns

Revolutionary, Center Power/Ground Pinout

Packaging:

? 32 pin, Her m et i c Ceramic DIP (Package 300)? 36 lead Ceramic SOJ (Package 100)? 36 lead Ceramic Flatpack (Package 226)

Organized as two banks of 512Kx8

Commercial, Industrial and Military Temperature Ranges 5 Volt Power Supply Low Power CMOS

TTL Compatible Inputs and Outputs

White Electronic Designs WS1M8-XXX

ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Unit Operating Temperature T A-55 +125°C Storage Temperature T STG-65+150°C Signal Voltage Relative to GND V G-0.5V CC +0.5V Junction Temperature T J150°C Supply Voltage V CC-0.57.0V

TRUTH TABLE

CS#OE#WE#Mode Data I/O Power

H X X Standby High Z Standby

L L H Read Data Out Active L X L Write Data In Active L H H Out Disable High Z Active NOTE: OE# is internally tied to the GND and not accessible on the WS1M8-XCXX.

RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min Max Unit Supply Voltage V CC 4.5 5.5V Input High Voltage V IH 2.2V CC + 0.3V Input Low Voltage V IL-0.3+0.8V Operating Temp. (Mil.)T A-55+125°C

CAPACITANCE

T A = +25°C

Parameter Symbol Condition Max Unit Input capacitance C IN V IN = 0V, f = 1.0MHz20pF Output capicitance C OUT V OUT = 0V, f = 1.0MHz20pF This parameter is guaranteed by design but not tested.

DC CHARACTERISTICS

V CC = 5.0V, V SS = 0V, -55°C ≤ T A ≤ +125°C

Parameter Sym Conditions Min Max Units Input Leakage Current I LI V CC = 5.5, V IN = GND to V CC10μA Output Leakage Current I LO1CS# = V IH, OE# = V IH, V OUT = GND to V CC10μA Operating Supply Current I CC1CS# = V IL, OE# = V IH, f = 5MHz, V CC = 5.5180mA Standby Current I SB1CS# = V IH, OE# = V IH, f = 5MHz, V CC = 5.540mA Output Low Voltage V OL I OL = 6mA0.4V Output High Voltage V OH I OH = -4.0mA 2.4V NOTE: D C test conditions: V IH = V CC -0.3V , V IL = 0.3V

1. OE# is internally tied to the GND and not accessible on the WS1M8-XCXX.

White Electronic Designs WS1M8-XXX

AC CHARACTERISTICS

V CC = 5.0V, V SS = 0V, -55°C ≤ T A ≤ +125°C

White Electronic Designs WS1M8-XXX TIMING WAVEFORM – READ CYCLE

White Electronic Designs WS1M8-XXX PACKAGE 100: 36 LEAD, CERAMIC SOJ

ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES

PACKAGE 226: 36 LEAD, CERAMIC FLAT PACK

ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES

White Electronic Designs WS1M8-XXX PACKAGE 300: 32 PIN, CERAMIC DIP, SINGLE CAVITY SIDE BRAZED