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(R)
74V1T126
SINGLE BUS BUFFER (3-STATE)
PRELIMINARY DATA
s s
s
s s
s
s
s
HIGH SPEED: tPD = 3.8 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 1 A (MAX.) at TA = 25 oC COMPATIBLE WITH TTL OUTPUTS: VIH = 2V (MIN), VIL = 0.8V (MAX) POWER DOWN PROTECTION ON INPUT SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY
S (SOT23-5L)
C (SC-70)
ORDER CODE: 74V1T126S 74V1T126C 3-STATE control input G has to be set LOW to place the output into the high impedance state. Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V.
DESCRIPTION The 74V1T126 is an advanced high-speed CMOS SINGLE BUS BUFFER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.
PIN CONNECTION AND IEC LOGIC SYMBOLS
October 1999
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74V1T126
INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 1 2 4 3 5 SYMBOL 1G 1A 1Y GND VCC NAME AND FUNCT ION Output Enable Input Data Input Data Output Ground (0V) Positive Supply Voltage
TRUTH TABLE
A X L H
X:"H" or "L" Z:High Impedance
G L H H
Y Z L H
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 20 25 50 -65 to +150 260 Unit V V V mA mA mA mA
o o
ICC or IGND DC VCC or Ground Current
C C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time (see note 1) (V CC = 5.0 0.5V) Parameter Valu e 4.5 to 5.5 0 to 5.5 0 to VCC -40 to +85 0 to 20 Unit V V V
o
C
ns/V
1) VIN from 0.8V to 2 V
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DC SPECIFICATIONS
Symb ol Parameter T est Cond ition s V CC (V) VIH VIL VOH VOL IOZ High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current Additional Worst Case Supply Current 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 5.5 0 to 5.5 5.5 5.5 I O =-50 A IO=-8 mA I O=50 A IO=8 mA VI = VIH or VIL VO = VCC or GND VI = 5.5V or GND VI = VCC or GND One Input at 3.4V, other input at VCC or GND 4.4 3.94 0.0 0.1 0.36 0.25 4.5 Min. 2 0.8 4.4 3.8 0.1 0.44 2.5 Typ . Value T A = 25 o C Max. -40 to 85 o C Min . 2 0.8 Max. V V Un it
V V A
II ICC ICC
0.1 1 1.35
1.0 10 1.5
A A mA
AC ELECTRICAL CHARACTERISTICS (Input t r = tf =3 ns)
Symb ol Parameter Test Co ndition V CC (*) (V) tPLH tPHL tPLZ tPHZ tPZH tPZL Propagation Delay Time Output Disable Time Output Enable Time 5.0 5.0 5.0 5.0 5.0 5.0 CL (pF ) 15 50 15 50 15 50
o
Value T A = 25 C Min. Typ . Max. 3.8 5.3 4.6 6.1 3.6 5.1 5.5 7.5 6.8 8.8 5.1 7.1 -40 to 85 C Min . Max. 1.0 1.0 1.0 1.0 1.0 1.0 6.5 8.5 8.0 10.0 6.0 8.0
o
Un it
ns ns ns
(*) Voltage range is 5V 0.5V
CAPACITIVE CHARACTERISTICS
Symb ol Parameter T est Cond ition s Value T A = 25 o C Min. C IN COUT CPD Input Capacitance Output Capacitance Power Dissipation Capacitance (note 1) Typ . 4 10 14 Max. 10 Un it -40 to 85 o C Min . Max. 10 pF pF pF
1) CPD isdefined as the value of the IC'sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD * VCC * fIN + ICC
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74V1T126
TEST CIRCUIT
T EST tPLH , tPHL tPZL , tPLZ tPZH , tPHZ
CL = 15/50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 1K orequivalent RT = ZOUT of pulse generator (typically 50)
SW IT CH Open VCC GND
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
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WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
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SOT23-5L MECHANICAL DATA
mm MIN. A A1 A2 b C D E E1 L e e1 0.90 0.00 0.90 0.35 0.09 2.80 2.60 1.50 0.35 0.95 1.9 TYP. MAX. 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.75 0.55 MIN. 35.4 0.0 35.4 13.7 3.5 110.2 102.3 59.0 13.7 37.4 74.8 mils TYP. MAX. 57.1 5.9 51.2 19.7 7.8 118.1 118.1 68.8 21.6
DIM.
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74V1T126
SC-70 MECHANICAL DATA
mm MIN. A A1 A2 b C D E E1 L e e1 0.80 0.00 0.80 0.15 0.10 1.80 1.80 1.15 0.10 0.65 1.3 TYP. MAX. 1.10 0.10 1.00 0.30 0.18 2.20 2.40 1.35 0.30 MIN. 31.5 0.0 31.5 5.9 3.9 70.9 70.9 45.3 3.9 25.6 51.2 mils TYP. MAX. 43.3 3.9 39.4 11.8 7.1 86.6 94.5 53.1 11.8
DIM.
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74V1T126
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