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 M54/M74HCT257 M54/M74HCT258
HCT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) HCT258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING)
.HI .LOWPOWERDI .COMPATI .OUTPUTDRI .SYMMETRI .BALANCEDPROPAGATI .PI
DESCRIPTION
GH SPEED tPD = 16 ns (TYP.) at VCC = 5 V SSIPATION ICC = 4 A (MAX.) at TA = 25 C BLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) VE CAPABILITY 15 LSTTL LOADS CAL OUTPUT IMPEDANCE IOH = IOL = 6 mA (MIN.) ON DELAYS tPLH = tPHL N AND FUNCTION COMPATIBLE WITH 54/74LS257/258
B1R (Plastic Package)
F1R (Ceramic Package)
M1R (Micro Package)
C1R (Chip Carrier)
ORDER CODES : M54HCTXXXF1R M74HCTXXXM1R M74HCTXXXB1R M74HCTXXXC1R
PIN CONNECTIONS (top view) HCT257
The M54/74HCT257 and the M54/74HCT258 are high speed CMOS MULTIPLEXERs fabricated with silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These IC's are composed of an independent 2channel multiplexer with common SELECT and ENABLE INPUT. The M54/74HCT258 is an inverting multiplexer while the M54/74HCT257 is a non-inverting multiplexer. When the ENABLE INPUT is held "High", outputs of both IC's become high-impedance state. If SELECT INPUT is held "Low", "A" data is selected, when SELECT INPUT is high "H", "B" data is chosen. All inputs are equipped with protection circuits against static discharge and transient excess voltage. This integrated circuit has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replace-
HCT258
February 1993
1/12
M54/M74HCT257/258
INPUT AND OUTPUT EQUIVALENT CIRCUIT
CHIP CARRIER HCT257 HCT258
NC = No Internal Connection
PIN DESCRIPTION (HCT257)
PIN No 1 2, 5, 14, 11 3, 6, 13, 10 4, 7, 12, 9 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y OE GND V CC NAME AND FUNCTION Common Data Select Input Data Input From Source A Data Inputs from Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage
PIN DESCRIPTION (HCT258)
PIN No 1 2, 5, 14, 11 3, 6, 13, 10 4, 7, 12, 9 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y OE GND VCC NAME AND FUNCTION Common Data Select Input Data Input From Source A Data Inputs from Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage
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M54/M74HCT257/258
IEC LOGIC SYMBOL HCT257 HCT258
LOGIC DIAGRAM HCT257 HCT258
TRUTH TABLE
INPUTS OE H L L L L SELECT X L L H H A X L H X X B X X X L H Y (257) Z L H L H OUTPUTS Y (258) Z H L H L
X = DON'T CARE Z = HIGH IMPEDANCE
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M54/M74HCT257/258
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO IIK IOK IO ICC or IGND PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Source Sink Current Per Output Pin DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 20 20 35 70 500 (*) -65 to +150 300 Unit V V V mA mA mA mA mW
o o
C C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied. (*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VI VO Top tr, tf Parameter Supply Voltage Input Voltage Output Voltage Operating Temperature: M54HC Series M74HC Series Input Rise and Fall Time (VCC = 4.5 to 5.5V) Value 4.5 to 5.5 0 to VCC 0 to VCC -55 to +125 -40 to +85 0 to 500 Unit V V V C o C ns
o
4/12
M54/M74HCT257/258
DC SPECIFICATIONS
Test Conditions Symbol Parameter VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 VI = IO=-20 A VIH or IO=-4.0 mA V IL VI = IO= 20 A VIH or IO= 4.0 mA V IL VI = VCC or GND VI = VCC or GND VI = VCC or GND Per Input pin VI = 0.5V or V I = 2.4V Other Inputs at V CC or GND 4.4 4.18 4.5 4.31 0.0 0.17 0.1 0.26 0.5 0.1 1 2.0 TA = 25 oC 54HC and 74HC Min. 2.0 Typ. Max.
Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. 2.0 Max. Min. 2.0 Max.
Unit
VIH
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
V
V IL
0.8
0.8
0.8
V
V OH
4.4 4.13 0.1 0.33 5 1 10 2.9
4.4 4.10 0.1 0.4 10 1 20 3.0 V A A A mA V
VOL
Low Level Output Voltage
4.5
IOZ II ICC ICC
3-State Output Off State Current Input Leakage Current Quiescent Supply Current Additional worst case supply current
5.5 5.5 5.5 5.5
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M54/M74HCT257/258
AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns)
Test Conditions Symbol Parameter VCC (V) 4.5 4.5 HCT257 HCT258 4.5 TA = 25 C 54HC and 74HC Min. Typ. 7 19 17 20 Max. 12 30 27 30
o
Value -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. 15 38 34 38 Min. Max. 18 45 41 45
Unit
tTLH tTHL tPLH tPHL tPLH tPHL tPZL tPZH tPLZ tPHZ CIN COUT CPD (*)
Output Transition Time Propagation Delay Time (A, B - Y) Propagation Delay Time (SELECT - Y) Output Enable Time Output Disable Time Input Capacitance Output Capacitance Power Dissipation Capacitance
ns ns
ns
4.5 4.5
RL = 1 K RL = 1 K
18 16 5 10
30 30 10
38 38 10
45 45 10
ns ns pF pF pF
HCT257 HCT258
34 33
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD *VCC *fIN + ICC/4 (per Channel)
6/12
M54/M74HCT257/258
SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT ICC (Opr.)
C PD CALCULATION
CPD is to be calculated with the following formula by using the measured value of ICC (opr.) in the test circuit opposite. ICC (opr) CPD = fIN x VCC
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERSISTICS TESt.
7/12
M54/M74HCT257/258
Plastic DIP16 (0.25) MECHANICAL DATA
mm MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP. MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 inch TYP. MAX.
DIM.
P001C
8/12
M54/M74HCT257/258
Ceramic DIP16/1 MECHANICAL DATA
mm MIN. A B D E e3 F G H L M N P Q 7.8 2.29 0.4 1.17 0.22 0.51 0.38 17.78 2.79 0.55 1.52 0.31 1.27 10.3 8.05 5.08 0.307 0.090 0.016 0.046 0.009 0.020 3.3 0.015 0.700 0.110 0.022 0.060 0.012 0.050 0.406 0.317 0.200 TYP. MAX. 20 7 0.130 MIN. inch TYP. MAX. 0.787 0.276
DIM.
P053D
9/12
M54/M74HCT257/258
SO16 (Narrow) MECHANICAL DATA
DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm TYP. MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010
P013H
10/12
M54/M74HCT257/258
PLCC20 MECHANICAL DATA
mm MIN. A B D d1 d2 E e e3 F G M M1 1.27 1.14 7.37 1.27 5.08 0.38 0.101 0.050 0.045 9.78 8.89 4.2 2.54 0.56 8.38 0.290 0.050 0.200 0.015 0.004 TYP. MAX. 10.03 9.04 4.57 MIN. 0.385 0.350 0.165 0.100 0.022 0.330 inch TYP. MAX. 0.395 0.356 0.180
DIM.
P027A
11/12
M54/M74HCT257/258
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
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