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Part: CD54AC157F3A
Category:
Logic
-> Encoders/Multiplexers
-> Multiplexers
Description: ti CD54AC157, Quad Non-inverting 2-Input Multiplexers
Company: Texas Instruments, Inc.
Datasheet: Download CD54AC157F3A datasheet File size : 300 kB
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Datasheet text preview:
CD54AC157, CD74AC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCHS335 MARCH 2003
D D D D D D
AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply Voltage Speed of Bipolar F, AS, and S, With Significantly Reduced Power Consumption Balanced Propagation Delays ±24-mA Output Drive Current Fanout to 15 F Devices SCR-Latchup-Resistant CMOS Process and Circuit Design Exceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015
CD54AC157 . . . F PACKAGE CD74AC157 . . . E OR M PACKAGE (TOP VIEW)
A /B 1A 1B 1Y 2A 2B 2Y GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC G 4A 4B 4Y 3A 3B 3Y
description/ordering information
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 1.5-V to 5.5-V VCC operation. The 'AC157 devices feature a common strobe (G) input. When the strobe is high, all outputs are low. When the strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The devices provide true data. ORDERING INFORMATION
TA PDIP E to 125°C 55°C to 125°C SOIC M PACKAGE Tube Tube Tape and reel ORDERABLE PART NUMBER CD74AC157E CD74AC157M CD74AC157M96 TOP-SIDE MARKING CD74AC157E AC157M
CDIP F Tube CD54AC157F3A CD54AC157F3A Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS G H L L L L A/B X L L H H A X L H X X B X X X L H OUTPUT Y L L H L H
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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1
CD54AC157, CD74AC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCHS335 MARCH 2003
logic diagram (positive logic)
1A 2 4 3 1B 5 7 2B 6
1Y
2A
2Y
3A
11 9 3Y
3B
10
4A
14 12 4Y
4B
13
G A/B
15 1
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 6 V Input clamp current, IIK (VI VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous output current, IO (VO > 0 V or VO < VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA Package thermal impedance, JA (see Note 2): E package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W M package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7.
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POST OFFICE BOX 655303
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CD54AC157, CD74AC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCHS335 MARCH 2003
recommended operating conditions (see Note 3)
TA = 25°C MIN VCC VIH Supply voltage High-level input voltage VCC = 1.5 V VCC = 3 V VCC = 5.5 V VCC = 1.5 V VIL VI VO IOH IOL t/v Low-level input voltage Input voltage Output voltage High-level output current Low-level output current Input transition rise or fall rate transition rise or fall rate VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V VCC = 1.5 V to 3 V VCC = 3.6 V to 5.5 V VCC = 3 V VCC = 5.5 V 0 0 1.5 1.2 2.1 3.85 0.3 0.9 1.65 VCC VCC 24 24 50 20 0 0 MAX 5.5 55°C to 125°C MIN 1.5 1.2 2.1 3.85 0.3 0.9 1.65 VCC VCC 24 24 50 20 0 0 MAX 5.5 40°C to 85°C MIN 1.5 1.2 2.1 3.85 0.3 0.9 1.65 VCC VCC 24 24 50 20 V V mA mA ns/V V V MAX 5.5 V UNIT
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC 1.5 V IOH = 50 µA VOH VI = VIH or VIL IOH = 4 mA IOH = 24 mA IOH = 50 mA IOH = 75 mA IOL = 50 µA VOL VI = VIH or VIL IOL = 12 mA IOL = 24 mA IOL = 50 mA IOL = 75 mA II ICC Ci VI = VCC or GND VI = VCC or GND, IO = 0 3V 4.5 V 3V 4.5 V 5.5 V 5.5 V 1.5 V 3V 4.5 V 3V 4.5 V 5.5 V 5.5 V 5.5 V 5.5 V ±0.1 8 10 ±1 160 10 0.1 0.1 0.1 0.36 0.36 0.1 0.1 0.1 0.5 0.5 1.65 1.65 ±1 80 10 µA µA TA = 25°C MIN 1.4 2.9 4.4 2.58 3.94 MAX 55°C to 125°C MIN 1.4 2.9 4.4 2.4 3.7 3.85 3.85 0.1 0.1 0.1 0.44 0.44 V MAX 40°C to 85°C MIN 1.4 2.9 4.4 2.48 3.8 V MAX UNIT
pF Test one output at a time, not exceeding 1-second duration. Measurement is made by forcing indicated current and measuring voltage to minimize power dissipation. Test verifies a minimum 50- transmission-line drive capability at 85°C and 75- transmission-line drive capability at 125°C.
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CD54AC157, CD74AC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCHS335 MARCH 2003
switching characteristics over recommended operating free-air temperature range, VCC = 1.5 V, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER tPLH tPHL tPLH tPHL tPLH tPHL FROM (INPUT) TO (OUTPUT) 55°C to 125°C MIN MAX 106 106 180 180 169 169 40°C to 85°C MIN MAX 97 97 164 164 154 154 ns ns ns UNIT
A or B or
Any Y Any Y Any Y
A/B G
switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER tPLH tPHL tPLH tPHL tPLH tPHL FROM (INPUT) TO (OUTPUT) 55°C to 125°C MIN 3 3 5.1 5.1 4.7 4.7 MAX 11.9 11.9 20.3 20.3 18.9 18.9 40°C to 85°C MIN 3.2 3.2 5.4 5.4 5.1 5.1 MAX 10.8 10.8 18.5 18.5 17.2 17.2 ns ns ns UNIT
A or B or
Any Y Any Y Any Y
A/B G
switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER tPLH tPHL tPLH tPHL tPLH tPHL FROM (INPUT) TO (OUTPUT) 55°C to 125°C MIN 2.1 2.1 3.6 3.6 3.4 3.4 MAX 8.5 8.5 14.5 14.5 13.5 13.5 40°C to 85°C MIN 2.2 2.2 3.8 3.8 3.6 3.6 MAX 7.7 7.7 13.2 13.2 12.3 12.3 ns ns ns UNIT
A or B or
Any Y Any Y Any Y
A/B G
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER Cpd Power dissipation capacitance TYP 156 UNIT pF
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POST OFFICE BOX 655303
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CD54AC157, CD74AC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SCHS335 MARCH 2003
PARAMETER MEASUREMENT INFORMATION
R1 = 500 S1 2 × VCC Open GND R2 = 500 TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 2 × VCC GND
From Output Under Test CL = 50 pF (see Note A)
tw When VCC = 1.5 V, R1 = R2 = 1 k LOAD CIRCUIT VOLTAGE WAVEFORMS PULSE DURATION VCC 50% VCC 0V tsu Data 50% Input 10% 90% tr th 90% VCC 50% VCC 10% 0 V tf VCC Input 50% VCC 50% VCC 0V
CLR Input
VCC 50% VCC 0V trec VCC
Reference Input
CLK
50% VCC 0V VOLTAGE WAVEFORMS RECOVERY TIME VCC 50% VCC tPLH 50% VCC 0V tPHL 90% tr tPHL tPLH 50% VCC 10% tf 50% 10% 90% tr VOH VOL 90% VOH 50% VCC 10% VOL tf
VOLTAGE WAVEFORMS SETUP AND HOLD AND INPUT RISE AND FALL TIMES
Input
Output Control tPZL
VCC 50% VCC 50% VCC 0V tPLZ 50% VCC tPZH VCC 20% VCC VOL tPHZ 50% VCC VOH 80% VCC 0 V
In-Phase Output
50% 10%
Output Waveform 1 S1 at 2 × VCC (see Note B) Output Waveform 2 S1 at GND (see Note B)
Out-of-Phase Output
90%
VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
VOLTAGE WAVEFORMS OUTPUT ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO = 50 , tr = 3 ns, tf = 3 ns. Phase relationships between waveforms are arbitrary. D. For clock inputs, fmax is measured with the input duty cycle at 50%. E. The outputs are measured one at a time with one input transition per measurement. F. tPLH and tPHL are the same as tpd. G. tPZL and tPZH are the same as ten. H. tPLZ and tPHZ are the same as tdis. I. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
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