Family Characteristics TinyLogic HS/HST and UHS Series

Category: Logic
Manufacture: Fairchild Semiconductor
Datasheet: Download this application note

Family Characteristics
February 1998 Revised April 2003
Family Characteristics TinyLogic HS/HST and UHS Series
Characteristics HS/HST Series
· High Speed performance HS propagation delays comparable to HC HST propagation delays comparable to HCT · High noise immunity HS VNIH = VNIL = 28% of VCC (CMOS compatible inputs) HST VIH = 2.0V, VIL = 0.8V (TTL compatible inputs) · Low noise generation Output edge rates comparable to HC/HCT One half the output current drive of HC/HCT Single output switching · Balanced output current drive |IOH| = IOL = 2 mA @ VCC = 4.5V · Low quiescent power consumption ICC < 1 µA @ 25°C · Broad VCC operating range HS 2V to 6V with 2V, 3V, 4.5V and 6V specs HST 4.5V to 5.5V for standard 5V operation · Dual rail ESD protection for input and output · Industry standard single-gate functions and pin out · Space saving SMT packaging in SOT23 and SC70
DC Comparison Table (NC7S00/ST00 vs. HC00/HCT00)
DC Electrical Characteristics @ TA = -40 to +85°C (unless otherwise noted) VCC (V) VCC (V) Parameter NC7S00 HC00 IOH /IOL IOH /IOL IOH /IOL VOL @ IOL (Max) VOL @ IOL (Max) VOL @ IOL (Max) VOH @ IOH (Min) VOH @ IOH (Min) VOH @ IOH (Min) VIH (Min) VIL (Max) VIH (Min) VIL (Max) IIN (Max) ICC (Max) 6.0 4.5 3.0 6.0 4.5 3.0 6.0 4.5 3.0 4.5 to 6.0 4.5 to 6.0 3.0 to 4.5 3.0 to 4.5 6.0 6.0 NC7ST00 HCT00 Units mA 4.5 mA mA V 4.5 0.33 0.33 V V V 4.5 4.5 to 5.5 4.5 to 5.5 4.13 2.0 0.8 3.84 2.0 0.8 V V V V V V 5.5 5.5
-2.6/2.6 -2/2 -1.3/1.3
0.33 0.33 0.33 5.63 4.13 2.63 0.7·VCC 0.3·VCC 0.7·VCC 0.3·VCC
Not spec'd 0.33 0.33 Not spec'd 5.34 3.84 Not spec'd 0.7·VCC 0.3·VCC Not spec'd Not spec'd
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© 2003 Fairchild Semiconductor Corporation
DC Performance HS/HST Series
The HS/HST series are designed and fabricated to have performance similar to the standard HC/HCT logic families. The DC Comparison Table compares the DC specifications for HS/HST vs. HC/HCT for the "00" NAND gate function. Noteworthy differences are in the reduced IOL/IOH output drive current specification and the improved VOH and ICC specifications for HS/HST vs. HC/HCT. Also, the HS series is fully specified for 3V VCC operation. Typical output current drive characteristics for the NC7S00 device are shown in Figure 1 and Figure 2 at room temperature and over the recommended VCC operating range. All devices in the HS/HST series use the identical output stage and share these characteristics. The drive current decreases with decreasing VCC . The low current drive nature of the HS/HST series is consistent with their low noise generation, low dynamic power consumption, and relatively slow output edge rate characteristics. This low current drive does not permit incident-wave switching of transmission lines. The typical output current drive characteristics over the recommended operating temperature range and operating at 3V and 4.5V VCC is shown in Figure 3, Figure 4, Figure 5 and Figure 6. An increase in operating temperature will reduce the current drive and increase the on-resistance of CMOS transistors.
FIGURE 1. NC7S00 Typical IOL vs. VOL @ TA = 25°C
FIGURE 2. NC7S00 Typical IOH vs. VOH @ TA = 25°C
FIGURE 3. NC7S00 Typical IOL vs. VOL @ VCC = 3V
FIGURE 4. NC7S00 Typical IOH vs. VOH @ VCC = 3V
FIGURE 5. NC7S00 Typical IOL vs. VOL @ VCC = 4.5V
FIGURE 6. NC7S00 Typical IOH vs. VOH @ VCC = 4.5V

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