74VHC373T

® 74VHC373 OCTAL D-TYPE LATCH WITH 3 STATE OUTPUT NON INVERTING s s s s s s s s s s HIGH SPEED: tPD = 5.0 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 373 IMPROVED LATCH-UP IMMUNITY LOW NOISE: VOLP = 0.9V (Max.) M (Micro Package) T (TSSOP Package) ORDER CODES : 74VHC373M 74VHC373T While the LE input is held at a high level, the Q outputs will follow the data inputs precisely. When the LE is taken low, the Q outputs will be latched precisely at the logic level of D input data. While the (OE) input is low, the 8 outputs will be in a normal logic state (high or low logic level) and while high level the outputs will be in a 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. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. DESCRIPTION The 74VHC373 is an advanced high-speed CMOS OCTAL D-TYPE LATCH with 3 STATE OUTPUT NON INVERTING fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. This 8 bit D-Type latch is controlled by a latch enable input (LE) and an output enable input (OE). PIN CONNECTION AND IEC LOGIC SYMBOLS June 1999 1/10 74VHC373 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 5, 6, 9, 12, 15, 16, 19 3, 4, 7, 8, 13, 14, 17, 18 11 10 20 SYMBOL OE D0 to D7 NAME AND FUNCT ION 3 State Output Enable Input (Active LOW) Data Inputs Q0 to Q7 3 State Outputs LE GND VCC Latch Enable Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS OE H L L L LE X L H H D X X L H OUT PUTS Q Z NO CHANGE * L H X:DON’T CARE Z: HIGH IMPEDANCE *: Q OUTPUTSARE LATCHED AT THE TIME WHEN THE LEINPUT ISTAKEN LOW LOGIC LEVEL. LOGIC DIAGRAM 2/10 74VHC373 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 ± 75 -65 to +150 300 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) (VCC = 3.3 ± 0.3V) (V CC = 5.0 ± 0.5V) Parameter Valu e 2.0 to 5.5 0 to 5.5 0 to VCC -40 to +85 0 to 100 0 to 20 Unit V V V o C ns/V ns/V 1) VIN from 30% to70%of VCC DC SPECIFICATIONS Symb ol Parameter T est Cond ition s V CC (V) VIH VIL VOH High Level Input Voltage Low Level Input Voltage High Level Output Voltage 2.0 3.0 to 5.5 2.0 3.0 to 5.5 2.0 3.0 4.5 3.0 4.5 VOL Low Level Output Voltage 2.0 3.0 4.5 3.0 4.5 IOZ High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current 5.5 0 to 5.5 5.5 I O =-50 µ A IO=-50 µA IO=-50 µA IO=-4 mA IO=-8 mA I O=50 µ A IO=50 µA IO=50 µA IO=4 mA IO=8 mA VI = VIH or VIL VO = VCC or GND VI = 5.5V or GND VI = VCC or GND 1.9 2.9 4.4 2.58 3.94 0.0 0.0 0.0 0.1 0.1 0.1 0.36 0.36 ±0.25 2.0 3.0 4.5 o Value T A = 25 C Min. 1.5 0.7VCC 0.5 0.3VCC 1.9 2.9 4.4 2.48 3.8 0.1 0.1 0.1 0.44 0.44 ±2.5 Typ . Max. -40 to 85 C Min . 1.5 0.7VCC 0.5 0.3VCC Max. o Un it V V V V µA II ICC ±0.1 4 ±1.0 40 µA µA 3/10 74VHC373 AC ELECTRICAL CHARACTERISTICS (Input t r = tf =3 ns) Symb ol Parameter V CC (V) tPLH tPHL Propagation Delay Time LE to Q Test Co ndition CL (pF ) 15 50 15 50 15 50 15 50 15 50 15 50 50 50 RL RL RL RL RL = 1KΩ = 1KΩ = 1KΩ = 1KΩ = 1KΩ Value T A = 25 o C Min. Typ . Max. 7.0 11.0 9.5 4.9 6.4 7.3 9.8 5.0 6.5 7.3 9.8 5.5 7.0 9.5 6.5 14.5 7.2 9.2 11.4 14.9 7.2 9.2 11.4 14.9 8.1 10.1 13.2 9.2 5.0 5.0 4.0 4.0 1.0 1.0 50 50 1.5 1.0 Un it -40 to 85 o C Min . Max. 1.0 13.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 16.5 8.5 10.5 13.5 17.0 8.5 10.5 13.5 17.0 9.5 11.5 15.0 10.5 5.0 5.0 4.0 4.0 1.0 1.0 1.5 1.0 ns ns 3.3(*) 3.3(*) 5.0(**) 5.0(**) 3.3(*) 3.3(*) 5.0 5.0(**) 3.3 3.3(*) 5.0(**) 5.0(**) 3.3(*) 5.0 3.3(*) 5.0 (**) (*) (**) tPLH tPHL Propagation Delay Time D to Q ns tPZL tPZH Output EnableTime tPLZ tPHZ tw ts th tOSLH tOSHL Output Disable Time Pulse Width (LE) HIGH Setup Time D to LE HIGH or LOW Hold Time D toLE HIGH or LOW Output to Output Skew Time (note 1) R L = 1KΩ ns ns ns ns ns (**) 3.3(*) 5.0(**) 3.3 5.0(**) 3.3(*) 5.0(**) (*) (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5V ± 0.5V Note 1: Parameter guaranteed by design. tsoLH = |tpLHm- tpLHn|, tsoHL = |tpHLm - tpHLn| CAPACITIVE CHARACTERISTICS Symb ol Parameter T est Cond ition s o Value T A = 25 C Min. Typ . 4 6 27 Max. 10 -40 to 85 C Min . Max. 10 o Un it C IN COUT CPD Input Capacitance Output Capacitance Power Dissipation Capacitance (note 1) 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/8 (per Latch) 4/10 74VHC373 DYNAMIC SWITCHING CHARACTERISTICS Symb ol Parameter T est Cond ition s V CC (V) VOLP VOLV VIHD VILD Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 5.0 -0.9 5.0 5.0 C L = 50 pF 3.5 1.5 Min. Typ . 0.6 -0.6 V Value T A = 25 o C Max. 0.9 -40 to 85 o C Min . Max. Un it 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n -1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. TEST CIRCUIT T EST tPLH , tPHL tPZL , tPLZ tPZH , tPHZ CL = 15/50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 1KΩ orequivalent RT = ZOUT of pulse generator (typically 50Ω) SW IT CH Open VCC GND 5/10 74VHC373 WAVEFORM 1: LE TO Qn PROPAGATION DELAYS, LE MINIMUM PULSE WIDTH, Dn TO LE SETUP AND HOLD TIMES (f=1MHz; 50% duty cycle) 6/10 74VHC373 WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIMES (f=1MHz; 50% duty cycle) WAVEFORM 3: PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle) 7/10 74VHC373 SO-20 MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 7.40 0.50 12.60 10.00 1.27 11.43 7.60 1.27 0.75 8 (max.) 0.291 0.19 13.00 10.65 0.35 0.23 0.50 45 (typ.) 0.496 0.393 0.050 0.450 0.299 0.050 0.029 0.512 0.419 0.10 mm TYP. MAX. 2.65 0.20 2.45 0.49 0.32 0.013 0.009 0.020 0.004 MIN. inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012 P013L 8/10 74VHC373 TSSOP20 MECHANICAL DATA mm MIN. A A1 A2 b c D E E1 e K L 0o 0.50 0.05 0.85 0.19 0.09 6.4 6.25 4.3 6.5 6.4 4.4 0.65 BSC 4o 0.60 8o 0.70 0o 0.020 0.10 0.9 TYP. MAX. 1.1 0.15 0.95 0.30 0.2 6.6 6.5 4.48 0.002 0.335 0.0075 0.0035 0.252 0.246 0.169 0.256 0.252 0.173 0.0256 BSC 4o 0.024 8o 0.028 0.004 0.354 MIN. inch TYP. MAX. 0.433 0.006 0.374 0.0118 0.0079 0.260 0.256 0.176 DIM. A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 9/10 74VHC373 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. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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