Datasheet

ManualsBrandsUnbranded ManualsLogic ICsLogic IC - Multiplexer Multiplexer Single supply DIP 16

M54HCT157/158

M74HCT157/158

April 1993

HCT158 QUAD 2 CHANNEL MULTIPLEXER (INV.)

HCT157 QUAD 2 CHANNEL MULTIPLEXER

B1R

(Plastic Package)

ORDER CODES :

M54HCTXXXF1R M74HCTXXXM1R

M74HCTXXXB1R M74HCTXXXC1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

HCT158

HCT157

DESCRIPTION

.HIGH SPEED

= 21 ns (TYP.) AT V

=5V

.LOW POWER DISSIPATION

=4 µA (MAX.) AT T

=25 °C

.COMPATIBLE WITH TTL OUTPUTS

= 2V (MIN.) V

= 0.8V (MAX)

.OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.SYMMETRICAL OUTPUT IMPEDANCE

IOH =I

= 4 mA (MIN.)

.BALANCED PROPAGATION DELAYS

PLH

PHL

.PIN AND FUNCTION COMPATIBLE

WITH 54/74LS157/158

The M54/74HCT157 and the M54/74HCT158 are

high speed CMOS QUAD 2-CHANNEL MULTI-

PLEXERs fabricated with silicon gate C

MOS tech-

nology. They achieve the high speed operation

similar to equivalent LSTTL while maintaining the

CMOS low power dissipation.

These devices consist of four 2-input digital multi-

plexers with common select and strobe inputs. The

HCT158 is an inverting multiplexer while the

HCT157 is a non-inverting multiplexer. When the

STROBE input is held High, selection of data is in-

hibited and all the outputs become Low in the

M74HCT157 and High in theM74HCT158. The SE-

LECT decoding determines whether the A or B in-

puts get routed to their corresponding Y outputs. All

inputs are equipped with protection circuits against

static discharge and transient excess voltage.

M54/74HCT devices are designed to directly inter-

face HSC

MOS systems with TTL and NMOS com-

ponents. They are also plug in replacements for

LSTTL devices giving a reduction of power con-

sumption.

1/11

Summary of content (11 pages)

PAGE 1
M54HCT157/158 M74HCT157/158 HCT157 QUAD 2 CHANNEL MULTIPLEXER HCT158 QUAD 2 CHANNEL MULTIPLEXER (INV.) . . . . . . . HIGH SPEED tPD = 21 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.
PAGE 2
M54/M74HCT157 M54/M74HCT158 CHIP CARRIER HCT157 HCT158 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION (for HCT157) PIN No 1 SYMBOL SELECT NAME AND FUNCTION Common Data Select Input 2, 5, 11, 14 1A to 4A 3, 6, 10, 13 PIN DESCRIPTION (for HCT158) PIN No 1 SYMBOL SELECT NAME AND FUNCTION Common Data Select Input Data Inputs From Source A 2, 5, 11, 14 1A to 4A Data Inputs From Source A 1B to 4B Data Inputs From Source B 3, 6, 10, 13 1B to 4B Data Inputs From Source B 4, 7, 9, 12 15 1Y
PAGE 3
M54/M74HCT157 M54/M74HCT158 TRUTH TABLE INPUTS OUTPUTS STROBE H SELECT X A X B X Y (HCT157) L Y (HCT158) H L L L L L L H H X X L H X L H L L H L H X H H L X: DON’T CARE IEC LOGIC SYMBOL HCT157 HCT158 HCT157 HCT158 LOGIC DIAGRAM 3/11
PAGE 4
M54/M74HCT157 M54/M74HCT158 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCC VI Supply Voltage DC Input Voltage -0.5 to +7 -0.5 to VCC + 0.5 V V VO DC Output Voltage -0.5 to VCC + 0.
PAGE 5
M54/M74HCT157 M54/M74HCT158 DC SPECIFICATIONS Test Conditions Symbol Parameter High Level Input Voltage 4.5 to 5.5 V IL Low Level Input Voltage 4.5 to 5.5 V OH High Level Output Voltage II ICC ∆ICC Low Level Output Voltage Input Leakage Current Quiescent Supply Current Additional worst case supply current TA = 25 C 54HC and 74HC Min. Typ. Max. VCC (V) VIH VOL Value o 2.0 -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 2.0 0.8 4.5 VI = IO=-20 µA VIH or IO=-4.0 mA V IL 4.
PAGE 6
M54/M74HCT157 M54/M74HCT158 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions Value o -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. Symbol Parameter VCC (V) TA = 25 C 54HC and 74HC Min. Typ. Max. tTLH tTHL Output Transition Time 4.5 8 15 19 22 ns tPLH tPHL Propagation Delay Time (A, B - Y) 4.5 16 25 31 38 ns tPLH tPHL Propagation Delay Time (SELECT - Y) 4.5 19 30 38 45 ns tPLH tPHL Propagation Delay Time (STROBE - Y) 4.
PAGE 7
M54/M74HCT157 M54/M74HCT158 Plastic DIP16 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.77 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.
PAGE 8
M54/M74HCT157 M54/M74HCT158 Ceramic DIP16/1 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 20 0.787 B 7 0.276 D E 3.3 0.130 0.38 e3 0.015 17.78 0.700 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 H 1.17 1.52 0.046 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N P Q 10.3 7.8 8.05 5.08 0.406 0.307 0.317 0.
PAGE 9
M54/M74HCT157 M54/M74HCT158 SO16 (Narrow) MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 9.8 E 5.8 10 0.385 6.2 0.228 0.393 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.
PAGE 10
M54/M74HCT157 M54/M74HCT158 PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 9.78 10.03 0.385 0.395 B 8.89 9.04 0.350 0.356 D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 E 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 F 0.38 0.015 G 0.101 0.004 M 1.27 0.050 M1 1.14 0.
PAGE 11
M54/M74HCT157 M54/M74HCT158 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.