SN54173 Datasheet, PDF (5/19 Pages) Texas Instruments – 4-BIT D-TYPE REGISTERS WITH 3-STATE OUTPUTS

SN54173, SN54LS173A, SN74173, SN74LS173A
4-BIT D-TYPE REGISTERS
WITH 3-STATE OUTPUTS
SDLS067A – OCTOBER 1976 – REVISED JUNE 1999
recommended operating conditions (see Note 3)
SN54173
MIN NOM MAX
SN74173
UNIT
MIN NOM MAX
VCC Supply voltage
4.5
5 5.5 4.75
5 5.25 V
IOH High-level output current
–2
–5.2 mA
IOL
Low-level output current
16
16 mA
TA
Operating free-air temperature
–55
125
0
70 °C
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†
SN54173
MIN TYP‡ MAX
SN74173
MIN TYP‡ MAX ^UNIT
VIH High-level input voltage
2
VIL
Low-level input voltage
VIK
Input clamp voltage
VCC = MIN, II = –12 mA
VOH High-level output voltage
VCC = MIN,
VIL = 0.8 V,
VIH = 2 V,
IOH = MAX
2.4
VOL Low-level output voltage
VCC = MIN,
VIL = 0.8 V,
VIH = 2 V,
IOL = 16 mA
IO(off)
Off-state (high-impedance state)
output current
VCC = MAX,
VIH = 2 V
VO = 2.4 V
VO = 0.4 V
II
Input current
at maximum input voltage
VCC = MAX, VI = 5.5 V
2
0.8
–1.5
2.4
0.4
150
–150
1
V
0.8 V
–1.5 V
V
0.4 V
40
µA
–40
1 mA
IIH
High-level input current
VCC = MAX, VI = 2.4 V
40
40 µA
IIL
Low-level input current
VCC = MAX, VI = 0.4 V
IOS
Short-circuit output current§
VCC = MAX
–30
–1.6
–70 –30
–1.6 mA
–70 mA
ICC Supply current
VCC = MAX, See Note 4
50
72
50
72 mA
† _{For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.}
‡ _{All typical values are at VCC = 5 V, TA = 25°C.}
§ _{Not more than one output should be shorted at a time.}
NOTE 4: ICC is measured with all outputs open; CLR grounded, following momentary connection to 4.5 V, N, G1, G2, and all data inputs grounded;
and CLK and M at 4.5 V.
timing requirements over recommended operating conditions (unless otherwise noted)
fclock Input clock frequency
tw
Pulse duration
tsu
Setup time
th
Hold time
CLK or CLR
Data enable (G1, G2)
Data
CLR (inactive state)
Data enable (G1, G2)
Data
SN54173
MIN MAX
25
20
17
10
10
2
10
SN74173
MIN MAX
25
20
17
10
10
2
10
UNIT
MHz
ns
ns
ns
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