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SN74LVC827 10-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
SCAS306B - MARCH 1993 - REVISED JULY 1995
D D D D D
EPIC TM (Enhanced-Performance Implanted CMOS) Submicron Process Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25C Typical VOHV (Output VOH Undershoot) > 2 V at VCC = 3.3 V, TA = 25C Latch-Up Performance Exceeds 250 mA Per JEDEC Standard JESD-17 Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages
DB, DW, OR PW PACKAGE (TOP VIEW)
description
This 10-bit buffer/bus driver is designed for 2.7-V to 3.6-V VCC operation.
OE1 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VCC Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 OE2
The SN74LVC827 provides a high-performance bus interface for wide data paths or buses carrying parity. The 3-state control gate is a 2-input AND gate with active-low inputs so that if either output-enable (OE1 or OE2) input is high, all ten outputs are in the high-impedance state. The SN74LVC827 provides true data at its outputs. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN74LVC827 is characterized for operation from - 40C to 85C.
FUNCTION TABLE INPUTS OE1 L L H X OE2 L L X H A L H X X OUTPUT Y L H Z Z
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. EPIC is a trademark of Texas Instruments Incorporated.
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.
Copyright (c) 1995, Texas Instruments Incorporated
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SN74LVC827 10-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
SCAS306B - MARCH 1993 - REVISED JULY 1995
logic symbol
1 OE1 OE2 13 & EN
logic diagram (positive logic)
OE1 OE2 1 13
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10
2 3 4 5 6 7 8 9 10 11
1
23 22 21 20 19 18 17 16 15 14
Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10
A1
2
23
Y1
To Nine Other Channels
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to 6.5 V Output voltage range, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 50 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Maximum power dissipation at TA = 55C (in still air) (see Note 3): DB package . . . . . . . . . . . . . . . . . 0.65 W DW package . . . . . . . . . . . . . . . . . 1.7 W PW package . . . . . . . . . . . . . . . . . . 0.7 W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C
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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The maximum package power dissipation is calculated using a junction temperature of 150C and a board trace length of 750 mils. For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002B.
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SN74LVC827 10-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
SCAS306B - MARCH 1993 - REVISED JULY 1995
recommended operating conditions (see Note 4)
MIN VCC VIH VIL VI VO IOH IOL t /v Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage High-level High level output current Low level output current Low-level Input transition rise or fall rate VCC = 2.7 V VCC = 3 V VCC = 2.7 V VCC = 3 V 0 - 40 VCC = 2.7 V to 3.6 V VCC = 2.7 V to 3.6 V 2.7 2 0.8 0 0 5.5 VCC - 12 - 24 12 24 10 85 MAX 3.6 UNIT V V V V V mA mA ns / V C
TA Operating free-air temperature NOTE 4: Unused inputs must be held high or low to prevent them from floating.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER IOH = - 100 A VOH IOH = - 12 mA IOH = - 24 mA IOL = 100 A VOL II IOZ ICC Ci IOL = 12 mA IOL = 24 mA VI = 5.5 V or GND VO = VCC or GND VI = VCC or GND, One input at VCC - 0.6 V, VI = VCC or GND VO = VCC or GND IO = 0 Other inputs at VCC or GND TEST CONDITIONS VCC MIN to MAX 2.7 V 3V 3V MIN to MAX 2.7 V 3V 3.6 V 3.6 V 3.6 V 3 V to 3.6 V 3.3 V 9 10 MIN TYP MAX UNIT VCC - 0.2 2.2 2.4 2 0.2 0.4 0.55 5 10 20 500 A A A A pF pF V
V
nICC
Co 3.3 V For conditions shown as MIN or MAX, use the appropriate values under recommended operating conditions. All typical values are at VCC = 3.3 V, TA = 25C.
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER tpd ten tdis FROM (INPUT) A OE OE TO (OUTPUT) Y Y Y VCC = 3.3 V 0.3 V MIN 1.5 1.5 1.5 MAX 7 9 8 VCC = 2.7 V MIN MAX 8 11 9 ns ns ns UNIT
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3
SN74LVC827 10-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
SCAS306B - MARCH 1993 - REVISED JULY 1995
operating characteristics, VCC = 3.3 V, TA = 25C
PARAMETER Cpd d Power dissipation capacitance per buffer/driver Outputs enabled Outputs disabled TEST CONDITIONS CL = 50 pF pF, f = 10 MHz TYP 25 2.5 UNIT pF
PARAMETER MEASUREMENT INFORMATION
6V From Output Under Test CL = 50 pF (see Note A) 500 S1 Open GND 500 TEST tpd tPLZ/tPZL tPHZ/tPZH S1 Open 6V GND
LOAD CIRCUIT FOR OUTPUTS Timing Input tw 2.7 V Input 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS PULSE DURATION Data Input tsu 1.5 V
2.7 V 1.5 V 0V th 2.7 V 1.5 V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 2.7 V 1.5 V tPZL VOH Output Waveform 1 S1 at 6 V (see Note B) Output Waveform 2 S1 at GND (see Note B) tPZH tPLZ 1.5 V tPHZ VOH - 0.3 V VOH 3V VOL + 0.3 V VOL 1.5 V 0V
2.7 V Input tPLH Output 1.5 V 1.5 V 1.5 V 0V tPHL 1.5 V VOL tPHL Output 1.5 V tPLH VOH 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS
Output Control
1.5 V
[0V
VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING
NOTES: A. CL includes probe and jig 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 10 MHz, ZO = 50 , tr 2.5 ns, tf 2.5 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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Copyright (c) 1998, Texas Instruments Incorporated

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