器件名称:
M74HC253B1R
功能描述:
DUAL 4 CHANNEL MULTIPLEXER 3 STATE OUTPUT
文件大小:
355.35KB 共11页
简 介:
M74HC253 DUAL 4 CHANNEL MULTIPLEXER 3 STATE OUTPUT s s s s s s s HIGH SPEED: tPD = 16ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 253 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC253B1R M74HC253M1R T&R M74HC253RM13TR M74HC253TTR DESCRIPTION The M74HC253 is an high speed CMOS DUAL 4 CHANNEL MULTIPLEXER fabricated with silicon gate C2MOS technology. Each of these data (1C0-1C3, 2C0-2C3) is selected by the two address inputs A and B. Separate strobe inputs (1G, 2G) are provided for each of the two four-line sections. The strobe input (nG) can be used to inhibit the data output; the output of M74HC253 is a high impedance while the strobe input is held high. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/11 M74HC253 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1, 15 14, 2 6, 5, 4, 3 7, 9 10, 11, 12, 13 8 16 SYMBOL 1G, 2G A, B 1C0 to 1C3 1Y, 2Y 2C0 to 2C3 GND VCC NAME AND FUNCTION Output Enable Inputs Common Data Select Inputs Data Inputs From Source 1 3 State Multiplexer Outputs Data Inputs From Source 2 Ground (0V) Positive Supply Voltage TRUTH TABLE SELECT INPUTS B X L……
