74ABT573_07 Datasheet, PDF (7/13 Pages) Fairchild Semiconductor – Octal D-Type Latch with 3-STATE Outputs

Skew⁽¹²⁾
SOIC package.
Symbol
t_OSHL(14)
t_OSLH(14)
t_PS(15)
t_OST(14)
t_PV(16)
Parameter
Pin to Pin Skew, HL Transitions
Pin to Pin Skew, LH Transitions
Duty Cycle, LH–HL Skew
Pin to Pin Skew, LH/HL Transitions
Device to Device Skew LH/HL
Transitions
T_A = –40°C to +85°C,
V_CC = 4.5V to 5.5V,
C_L = 50pF,
8 Outputs
Switching⁽¹²⁾
Max.
1.0
1.0
1.4
1.5
2.0
T_A = –40°C to +85°C,
V_CC = 4.5V to 5.5V,
C_L = 250pF,
8 Outputs
Switching⁽¹³⁾
Max.
1.5
1.5
3.5
3.9
4.0
Units
ns
ns
ns
ns
ns
Notes:
12. This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described
switching in phase (i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.)
13. This specification is guaranteed but not tested. The limits represent propagation delays with 250pF load capacitors
in place of the 50pF load capacitors in the standard AC load.
14. Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate
outputs of the same device. The specification applies to any outputs switching HIGH-to-LOW (t_OSHL), LOW-to-HIGH
(t_OSLH), or any combination switching LOW-to-HIGH and/or HIGH-to-LOW (t_OST). This specification is guaranteed
but not tested.
15. This describes the difference between the delay of the LOW-to-HIGH and the HIGH-to-LOW transition on the same
pin. It is measured across all the outputs (drivers) on the same chip, the worst (largest delta) number is the
guaranteed specification. This specification is guaranteed but not tested.
16. Propagation delay variation for a given set of conditions (i.e., temperature and V_CC) from device to device. This
specification is guaranteed but not tested.
Capacitance
Symbol
C_IN
C_OUT(17)
Parameter
Input Capacitance
Output Capacitance
Conditions
(T_A = 25°C)
V_CC = 0V
V_CC = 5.0V
Note:
17. C_OUT is measured at frequency f = 1MHz per MIL-STD-883B, Method 3012.
Typ.
5
9
Units
pF
pF
©1993 Fairchild Semiconductor Corporation
74ABT573 Rev. 1.4
7
www.fairchildsemi.com