M74HC257M1R-M74HC257RM13TR Fast Delivery |IC PHOENIX CO.,LIMITED

Home › M › M15 > M74HC257M1R-M74HC257RM13TR,QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

If you need More Quantity or Better Price,Welcom Any inquiry.
We available via phone +865332716050 Email

Partno	Mfg	Dc	Qty	Available	Descript
M74HC257M1R	ST	N/a	214	avai	QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
M74HC257RM13TR	ST	N/a	5000	avai	QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

M74HC257RM13TR ,QUAD 2 CHANNEL MULTIPLEXER (3-STATE)Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
M74HC258M1R ,QUAD 2 CHANNLE MULTIPLEXER (3-STATE INVERTING)M74HC258QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING) ■ HIGH SPEED : t = 11 ns (TYP.) at V = 6VP ..
M74HC259B1R ,8 BIT ADDRESSABLE LATCHM74HC2598 BIT ADDRESSABLE LATCH ■ HIGH SPEED :t = 20 ns (TYP.) at V = 6VPD CC■ LOW POWER DISSIPATI ..
M74HC259M1R ,8 BIT ADDRESSABLE LATCHAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
M74HC259RM13TR ,8 BIT ADDRESSABLE LATCHABSOLUTE MAXIMUM RATINGS Symbol Parameter Value UnitV Supply Voltage -0.5 to +7 VCCV DC Input ..
M74HC266M1R ,QUAD EXCLUSIVE NOR GATE WITH OPEN DRAINAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
MAX1393ETB+ ,1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/2-Channel Single-Ended, 12-Bit, SAR ADCsFeaturesThe MAX1393/MAX1396 micropower, serial-output, 12-♦ 312.5ksps, 12-Bit Successive-Approximat ..
MAX139CPL ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterApplications MAX138CMH 0°C to +70°C 44 MOFP 5V P d P l M t MAX13BCQH (Y'C to +70°C 44 PLCC + ower ..
MAX139CPL ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterFeatures . Single Supply +2.5V to +7.0V Operation . Measures Both Positive and Negative Input ..
MAX139CPL+ ,3 1/2 Digit ADC with Reference, Charge Pump, and Direct LED DriversApplications MAXTEBCMH (Y'C to +70”C 44 MQFP V P d P I M MAX138CQH 0% to +70°C 44 PLCC " owere an ..
MAX139CQH ,3Digit A/D Converters with Bandgap Refrence and Charge-Pump Voltage ConverterGeneral Description The MAX138/MAX139 are 31/2 digit A/D converters (ADCs) with on-board LCD (M ..
MAX1400CAI ,%V, 18-Bit, Low-Power, Multichannel, Oversampling Sigma-Delta ADCFeaturesThe MAX1400 18-bit, low-power, multichannel, serial-' 18-Bit Resolution, Sigma-Delta ADCout ..

M74HC257M1R-M74HC257RM13TR
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
1/11August 2001 HIGH SPEED :
tPD = 11 ns (TYP.) at VCC = 6V LOW POWER DISSIPATION:
ICC =4μA(MAX.) at TA=25°C HIGH NOISE IMMUNITY:NIH = VNIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:OH | = IOL = 6mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 257
DESCRIPTION
The M74HC257 is an high speed CMOS QUAD 2
CHANNEL MULTIPLEXER (3-STATE) fabricated
with silicon gate C2 MOS technology.
This IC is composed of an independent 2-channel
multiplexer with common SELECT and ENABLE
(OE) input.
The M74HC257 is a non-inverting multiplexer.
When the ENABLE input is held "High", outputs of
the IC become in a High-Impedance state. If
SELECT input is held low, "A" data is selected,
when SELECT is high , "B" data is chosen.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
M74HC257
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
Z : High Impedance
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
M74HC257
3/11
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
RECOMMENDED OPERATING CONDITIONS
M74HC257
4/11
DC SPECIFICATIONS
M74HC257
5/11
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
CAPACITIVE CHARACTERISTICS
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per
Channel)
M74HC257
6/11
TEST CIRCUIT
CL = 50pF/150pF or equivalent (includes jig and probe capacitance)
R1 = 1KΩ or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
WAVEFORM 1: PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)

TEL:86-533-2716050 FAX:86-533-2716790