M74HC237RM13TR

M74HC237 3 TO 8 LINE DECODER LATCH ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 16ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(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 237 DIP TSSOP ORDER CODES DESCRIPTION The M74HC237 is an high speed CMOS 3 TO 8 LINE DECODER fabricated with silicon gate C2MOS technology. When GL goes from low to high, the address present at the select inputs (A, B, C) is stored in the latches. As long as GL remains high no address changes will be recognized. Output enable controls, G1 and G2 control the state of the outputs independently of the select or ) s ( ct SOP PACKAGE TUBE DIP SOP TSSOP M74HC237B1R M74HC237M1R ) s t( T&R o r P c u d M74HC237RM13TR M74HC237TTR latch-enable inputs. All of the outputs are low unless G1 is high and G2 is low. The M74HC237 is ideally suited for the implementation of glitch-free decoders in stored-address applications in bus oriented systems. All inputs are equipped with protection circuits against static discharge and transient excess voltage. e t le o s b O - u d o r P e t e l o PIN CONNECTION AND IEC LOGIC SYMBOLS s b O July 2001 1/11 M74HC237 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1, 2, 3 4 5 A, B, C GL G2 6 G1 15, 14, 13, 12, 11, 10, 9, 7 8 16 Y0 to Y7 Data Inputs Latch Enable Input Data Enable Input (Active LOW) Data Enable Input (Active HIGH) Decoder Outputs GND VCC Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS OUTPUTS ENABLE SELECT GL G2 G1 C B A Y0 X X L L L L L L L L H X H L L L L L L L L L L X H H H H H H H H H X X L L L L H H H H X X X L L H H L L H H X X X L H L H L H L H X L L H L L L L L L L ) s ( ct X : Don’t Care u d o r P e t e l o s b O 2/11 Y1 Y2 Y3 c u d Y4 o r P Y5 ) s t( Y6 L L L L L L L L L L L L L L L L L L H L L L L L L H L L L L L L H L L L L L L H L L L L L L H L L L L L L H L L L L L L Outputs corresponding to stored address H: all others L o s b O - e t le Y7 L L L L L L L L L H M74HC237 LOGIC DIAGRAM c u d This logic diagram has not be used to estimate propagation delays e t le ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter so Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK DC Input Diode Current IOK DC Output Diode Current IO DC Output Current ) s ( ct b O - du ICC or IGND DC VCC or Ground Current PD Power Dissipation o r P e Tstg Storage Temperature TL Lead Temperature (10 sec) t e l o ) s t( o r P Value Unit -0.5 to +7 V -0.5 to VCC + 0.5 V -0.5 to VCC + 0.5 ± 20 V mA ± 20 mA ± 25 mA ± 50 mA 500(*) mW -65 to +150 °C 300 °C 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 s b O RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage Value Unit 2 to 6 V VI Input Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature Input Rise and Fall Time tr, tf -55 to 125 °C VCC = 2.0V 0 to 1000 ns VCC = 4.5V 0 to 500 ns VCC = 6.0V 0 to 400 ns 3/11 M74HC237 DC SPECIFICATIONS Test Condition Symbol VIH Parameter High Level Output Voltage VOL Low Level Output Voltage II Input Leakage Current Quiescent Supply Current ICC Min. 2.0 4.5 6.0 2.0 4.5 6.0 Low Level Input Voltage VOH TA = 25°C VCC (V) High Level Input Voltage VIL s b O 4/11 Max. -40 to 85°C -55 to 125°C Min. Min. Max. 1.5 3.15 4.2 0.5 1.35 1.8 0.5 1.35 1.8 IO=-20 µA 1.9 2.0 1.9 1.9 IO=-20 µA 4.4 4.5 4.4 4.4 6.0 IO=-20 µA 5.9 6.0 5.9 5.9 4.5 IO=-4.0 mA 4.18 4.31 4.13 4.10 5.68 6.0 IO=-5.2 mA 2.0 IO=20 µA 0.0 0.1 0.1 4.5 IO=20 µA 0.0 0.1 0.1 6.0 IO=20 µA 0.0 0.1 4.5 IO=4.0 mA 0.17 0.26 6.0 IO=5.2 mA 0.18 0.26 6.0 VI = VCC or GND 6.0 VI = VCC or GND 5.63 e t le ± 0.1 b O - so 4 Max. V 0.5 1.35 1.8 4.5 5.8 Unit 1.5 3.15 4.2 2.0 u d o r P e Typ. 1.5 3.15 4.2 ) s ( ct t e l o Value 5.60 uc V V ) s t( 0.1 0.1 od 0.33 0.40 0.33 0.40 ±1 ±1 µA 40 80 µA 0.1 Pr 0.1 V M74HC237 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) Test Condition Symbol Parameter tTLH tTHL Output Transition Time tPLH tPHL Propagation Delay Time (A, B, C - Y) tPLH tPHL Propagation Delay Time (G1 - Y) tPLH tPHL Propagation Delay Time (G2 - Y) tPLH tPHL Propagation Delay Time (GL - Y) tW(L) Minimum Pulse Width (GL) Minimum Set-up Time (A, B, C - GL) ts Minimum Hold Time (A, B, C - GL) th Value TA = 25°C VCC (V) Min. 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 ) s ( ct Typ. Max. 30 8 7 60 19 16 45 15 13 45 15 13 65 21 18 10 6 6 12 3 2 75 15 13 180 36 31 140 28 24 140 28 24 190 38 32 75 15 13 50 10 9 25 5 5 -40 to 85°C -55 to 125°C Min. Min. Max. uc d o r P e let o s b O - 95 19 16 225 45 38 175 35 30 175 35 30 240 48 41 95 19 16 65 13 11 30 6 5 Unit Max. 110 22 19 270 54 46 210 42 36 210 42 36 285 57 48 110 22 19 75 15 13 40 8 7 ns ns ns ) s t( ns ns ns ns ns CAPACITIVE CHARACTERISTICS du Test Condition Symbol o r P e Parameter CPD s b O TA = 25°C Typ. Max. Input Capacitance 5.0 5 10 Power Dissipation Capacitance (note 1) 5.0 52 t e l o CIN VCC (V) Value Min. -40 to 85°C -55 to 125°C Min. Min. Max. 10 Unit Max. 10 pF pF 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. 5/11 M74HC237 TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) c u d WAVEFORM 1: PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle) e t le ) s ( ct u d o r P e t e l o s b O 6/11 o s b O - o r P ) s t( M74HC237 WAVEFORM 2: SETUP AND HOLD TIME, MINIMUM PULSE WIDTH (GL)(f=1MHz; 50% duty cycle) c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O 7/11 M74HC237 Plastic DIP-16 (0.25) MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 0.77 TYP 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 I 5.1 L c u d e t le 3.3 Z 1.27 ) s ( ct o s b O - o r P ) s t( 0.280 0.201 0.130 0.050 u d o r P e t e l o s b O P001C 8/11 M74HC237 SO-16 MECHANICAL DATA mm. DIM. MIN. TYP A inch MAX. MIN. TYP. a1 1.75 0.1 0.068 0.2 a2 MAX. 0.003 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 10 0.385 0.393 E 5.8 6.2 0.228 ) s t( 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 G 4.6 5.3 0.181 L 0.5 1.27 0.019 M e t le 0.62 S 8° (max.) ) s ( ct o r P c u d 0.157 0.208 0.050 0.024 o s b O - u d o r P e t e l o s b O PO13H 9/11 M74HC237 TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 E 6.2 6.4 6.6 0.244 0.252 E1 4.3 4.4 4.48 0.169 0.173 1 e c u d 0.65 BSC K 0° L 0.45 0.60 A1 ) s ( ct u d o b r P e t e l o e o r P 0.260 0.176 0.0256 BSC e t le 8° A2 A ) s t( 0.201 0° 0.75 o s b O - 0.018 K c 8° 0.024 0.030 L E D s b O E1 PIN 1 IDENTIFICATION 1 0080338D 10/11 M74HC237 c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom © http://www.st.com 11/11